{"product_id":"tropical-fish-uk-pencilfish-for-sale","title":"Three-Lined Pencilfish","description":"\u003cp\u003eThe X Three-Lined Pencilfish is one of those understated gems that experienced aquarists often recommend when someone wants a peaceful, elegant shoaling species for a refined South American setup. Known scientifically as \u003cem\u003eNannostomus beckfordi\u003c\/em\u003e, this slim \u003cstrong\u003epencil fish\u003c\/strong\u003e brings subtle gold, bronze, and dark lateral striping that looks especially striking under soft lighting and over dark substrate. For aquarists searching for \u003cstrong\u003etropical fish UK\u003c\/strong\u003e listings that offer something more unusual than the standard tetra, the Three-Lined Pencilfish stands out for its graceful mid-top swimming, calm nature, and suitability for a carefully planned community aquarium. Adult fish usually reach around 3-5cm, and the typical \u003cstrong\u003ethree-lined pencilfish lifespan\u003c\/strong\u003e is 3-5 years when water quality, diet, and group size are right.\u003c\/p\u003e\u003cp\u003eThis species is native to South America and does best in a calm, planted aquarium with gentle flow, warm water, and plenty of visual cover. If you have been researching \u003cstrong\u003ehow to care for three-lined pencilfish\u003c\/strong\u003e, the key points are simple: keep them in a group, avoid boisterous tank mates, feed a varied omnivorous diet, and maintain stable, slightly acidic to neutral water. Many hobbyists looking to \u003cstrong\u003ebuy live fish online uk\u003c\/strong\u003e or browse \u003cstrong\u003etropical fish uk for sale\u003c\/strong\u003e choose this species because it offers the charm of a shoaling fish without the constant frantic motion of some tetras. See our detailed photos showing body shape, stripe definition, and the warm metallic tones that make this species so appealing in a blackwater or planted display. For anyone building a peaceful \u003cstrong\u003etropical fish uk freshwater\u003c\/strong\u003e community, this is a rewarding and characterful choice.\u003c\/p\u003e\n\n\u003cdiv class=\"info-box\"\u003e\n  \u003ch4\u003e🔹 Quick Facts\u003c\/h4\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eScientific Name:\u003c\/strong\u003e \u003cem\u003eNannostomus beckfordi\u003c\/em\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCare Level:\u003c\/strong\u003e Intermediate\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMin Tank Size:\u003c\/strong\u003e 45 litres (about 10 gallons)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eRecommended Tank Size:\u003c\/strong\u003e 80 litres for a proper group\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTemperature:\u003c\/strong\u003e 22-28°C (72-82°F)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003epH Range:\u003c\/strong\u003e 5.0-7.5\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eLifespan:\u003c\/strong\u003e Up to 5 years\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTemperament:\u003c\/strong\u003e Peaceful, shy, shoaling\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDiet:\u003c\/strong\u003e Omnivore\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"species-profile\"\u003e\n  \u003ch3\u003eClassification\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOrder:\u003c\/strong\u003e Characiformes\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFamily:\u003c\/strong\u003e Lebiasinidae\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eGenus:\u003c\/strong\u003e Nannostomus\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003e\u003cem\u003eNannostomus beckfordi\u003c\/em\u003e, often sold as the Three-Lined Pencilfish, Golden Pencilfish, or Beckford's Pencilfish, belongs to a group of slender South American fishes prized for their calm behaviour and refined appearance. In the aquarium hobby, pencilfish sit alongside small characins as excellent community species, but they have their own distinct body shape, surface-oriented swimming style, and subtle social displays. Related species in the genus include the \u003ca href=\"\/products\/tropical-fish-uk\"\u003eNannostomus Unifasciatus - One-Lined Pencilfish\u003c\/a\u003e, the \u003ca href=\"\/products\/tropical-fish-uk\"\u003eGolden Pencilfish - Nannostomus Beckfordi\u003c\/a\u003e, and the more striking \u003ca href=\"\/products\/tropical-fish-uk\"\u003ePurple Pencilfish - Nannostomus Rubrocaudatus\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2 id=\"origin\"\u003eWhere Do Three-Lined Pencilfish Come From? Natural Habitat Explained\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eThree-Lined Pencilfish\u003c\/strong\u003e comes from northern and central parts of South America, with records from Guyana, Suriname, and sections of the Amazon basin. In the wild, \u003cstrong\u003enannostomus beckfordi\u003c\/strong\u003e is associated with slow-moving tributaries, flooded forest margins, shaded streams, and calm backwaters where leaf litter, roots, and overhanging vegetation create shelter. These are not open, fast-flowing river fish. Their natural environment is quieter, darker, and structurally complex, which explains why they can look nervous in bare aquariums with bright light and too much current.\u003c\/p\u003e\n\u003cp\u003eThe typical \u003cstrong\u003ethree-lined pencilfish habitat\u003c\/strong\u003e includes soft, slightly acidic water, tannins from decomposing leaves, and a rich supply of tiny invertebrates, biofilm, insect larvae, and fine organic matter. In nature they spend much of their time in the upper to middle water layers, picking at suspended foods and exploring cover. That natural feeding style is one reason a good \u003cstrong\u003ethree-lined pencilfish diet\u003c\/strong\u003e in captivity should include small foods that stay in the water column rather than only heavy sinking foods.\u003c\/p\u003e\n\u003cp\u003eFor aquarists interested in \u003cstrong\u003esouth american tropical fish UK\u003c\/strong\u003e collections, this species is a classic example of how habitat replication improves both colour and confidence. Soft lighting, floating plants, dark substrate, and wood all help recreate the feel of a blackwater edge habitat. Although they are not usually discussed as a conservation concern in the hobby, wild-type presentation still matters. Fish kept in a layout that reflects their natural conditions tend to show calmer \u003cstrong\u003ethree-lined pencilfish behaviour\u003c\/strong\u003e, better feeding response, and reduced stress.\u003c\/p\u003e\n\u003cp\u003eIf you are comparing options in the \u003cstrong\u003euk tropical fish\u003c\/strong\u003e market, this species appeals to aquarists who want a more naturalistic display rather than a tank built around bright, hyperactive schooling fish. Their subtle beauty is best seen in mature, planted aquariums where they can move through stems and driftwood with confidence. This is also why hobbyists searching for \u003cstrong\u003erare tropical fish uk\u003c\/strong\u003e or more unusual community species often end up choosing pencilfish over more common tetras.\u003c\/p\u003e\n\u003cdiv class=\"tip-box\"\u003e\n  \u003ch4\u003e💡 Expert Tip\u003c\/h4\u003e\n  \u003cp\u003eMimicking the natural habitat of \u003cem\u003eNannostomus beckfordi\u003c\/em\u003e improves health, colour, and confidence. Use dark substrate, clumps of fine-leaved plants, floating cover, and gentle filtration. In my experience, fish that arrive shy often settle far faster when the upper part of the tank feels sheltered.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2 id=\"tank-setup\"\u003eHow Do You Set Up the Perfect Tank for Three-Lined Pencilfish?\u003c\/h2\u003e\n\u003cp\u003eA successful \u003cstrong\u003ethree-lined pencilfish tank setup\u003c\/strong\u003e starts with understanding that this species is peaceful, slim-bodied, and easily intimidated. While the \u003cstrong\u003ethree-lined pencilfish minimum tank size\u003c\/strong\u003e is 45 litres, that is really the lower limit for a small group in a carefully maintained aquarium. A more comfortable \u003cstrong\u003ethree-lined pencilfish tank size\u003c\/strong\u003e is 80 litres or more, especially if you want a proper shoal and compatible community fish. The extra length matters more than sheer depth because these fish use horizontal swimming space near the top and middle of the tank.\u003c\/p\u003e\n\u003ch3\u003eTank Size Requirements\u003c\/h3\u003e\n\u003cp\u003eIf you are asking \u003cstrong\u003ehow many three-lined pencilfish in a tank\u003c\/strong\u003e, the answer is at least 8, with 10-12 being even better in a mature aquarium. Keeping too few often leads to timid behaviour and poor colour. In a 45-litre species-focused setup, a group of 8 can work if filtration is gentle and maintenance is consistent. In an 80-litre or larger community tank, a group of 10-15 gives a much better display and more natural social behaviour. This species is not suited to cramped nano layouts with no cover.\u003c\/p\u003e\n\u003ch3\u003eWater Parameters\u003c\/h3\u003e\n\u003cp\u003eThe ideal \u003cstrong\u003ethree-lined pencilfish water parameters\u003c\/strong\u003e are stable rather than extreme. Aim for a \u003cstrong\u003ethree-lined pencilfish temperature\u003c\/strong\u003e of 22-28°C, with a \u003cstrong\u003ethree-lined pencilfish water temperature\u003c\/strong\u003e around 25°C being a very reliable target for long-term care. The preferred \u003cstrong\u003ethree-lined pencilfish pH level\u003c\/strong\u003e is around 6.5, though they can be maintained between pH 5.0 and 7.5 if changes are gradual. \u003cstrong\u003eThree-lined pencilfish water hardness\u003c\/strong\u003e should stay between 1 and 12 dGH, with softer water generally helping colour and breeding behaviour. These are the \u003cstrong\u003ethree-lined pencilfish ideal conditions\u003c\/strong\u003e for stability, appetite, and calm social interaction.\u003c\/p\u003e\n\u003cdiv class=\"spec-grid\"\u003e\n  \u003cdiv class=\"spec-card\"\u003e\n    \u003cdiv class=\"spec-value\"\u003e22-28°C\u003c\/div\u003e\n    \u003cdiv class=\"spec-label\"\u003eTemperature\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"spec-card\"\u003e\n    \u003cdiv class=\"spec-value\"\u003epH 5.0-7.5\u003c\/div\u003e\n    \u003cdiv class=\"spec-label\"\u003epH Range\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"spec-card\"\u003e\n    \u003cdiv class=\"spec-value\"\u003e1-12 dGH\u003c\/div\u003e\n    \u003cdiv class=\"spec-label\"\u003eHardness\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"spec-card\"\u003e\n    \u003cdiv class=\"spec-value\"\u003e45L min\u003c\/div\u003e\n    \u003cdiv class=\"spec-label\"\u003eTank Size\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eFiltration\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eThree-lined pencilfish filtration needs\u003c\/strong\u003e are modest, but water quality still needs to be excellent. Use a mature sponge filter or a gentle internal filter with flow dispersed across plants or hardscape. They dislike being blasted around the tank, so avoid oversized powerheads or exposed high-output returns. A calm surface with slight movement is enough to maintain oxygen exchange while still allowing these fish to hold their preferred position. If you are planning a \u003cstrong\u003ethree-lined pencilfish aquarium setup\u003c\/strong\u003e in a planted tank, filtration should support biological stability without turning the aquarium into a river system.\u003c\/p\u003e\n\u003ch3\u003eSubstrate, Plants and Decor\u003c\/h3\u003e\n\u003cp\u003eA dark sand or fine gravel substrate helps these fish feel secure and shows off their body stripe more clearly. The species does especially well as \u003cstrong\u003ethree-lined pencilfish in planted tank\u003c\/strong\u003e layouts with stem plants, floating plants, and wood. Fine-leaved species, rooted plants, and trailing surface cover all help break up sight lines. In practical terms, think driftwood, leaf litter accents, and dense planting around the back and sides, leaving open swimming space through the middle. This sort of \u003cstrong\u003ethree-lined pencilfish tank setup\u003c\/strong\u003e also helps timid fish settle after transport.\u003c\/p\u003e\n\u003cp\u003eFor hobbyists building a pencilfish community, related species can inspire layout choices. The elegant body line of the \u003ca href=\"\/products\/tropical-fish-uk\"\u003eNannostomus Unifasciatus - One-Lined Pencilfish\u003c\/a\u003e suits similar soft, planted aquariums, while the warmer tones of the \u003ca href=\"\/products\/tropical-fish-uk\"\u003eGolden Pencilfish - Nannostomus Beckfordi\u003c\/a\u003e show how effective dark decor can be for contrast. If you like a more unusual display, the \u003ca href=\"\/products\/tropical-fish-uk\"\u003ePurple Pencilfish - Nannostomus Rubrocaudatus\u003c\/a\u003e is another species that benefits from shaded zones and cover.\u003c\/p\u003e\n\u003ch3\u003eLighting\u003c\/h3\u003e\n\u003cp\u003eModerate lighting is usually best. Very bright, exposed aquariums can wash out colour and make the fish skittish. Floating plants or wood cover help diffuse light and create a more natural look. Run lights for around 6-8 hours in newly established tanks and 8-10 hours once the aquarium is stable and plant growth is balanced.\u003c\/p\u003e\n\u003cdiv class=\"info-box\"\u003e\n  \u003ch4\u003eQuick Setup Checklist\u003c\/h4\u003e\n  \u003cul\u003e\n    \u003cli\u003eChoose 45 litres minimum, 80 litres recommended\u003c\/li\u003e\n    \u003cli\u003eKeep a group of at least 8 fish\u003c\/li\u003e\n    \u003cli\u003eMaintain 22-28°C, ideally around 25°C\u003c\/li\u003e\n    \u003cli\u003eUse pH 5.0-7.5 and soft to moderately hard water\u003c\/li\u003e\n    \u003cli\u003eAdd dark substrate, wood, and dense planting\u003c\/li\u003e\n    \u003cli\u003eKeep flow gentle and lighting moderate\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tip-box\"\u003e\n  \u003ch4\u003e💡 Pro Tip\u003c\/h4\u003e\n  \u003cp\u003eAlways cycle the aquarium for 4-6 weeks before adding fish. A mature filter and stable water chemistry make a huge difference when deciding \u003cstrong\u003ehow to care for three-lined pencilfish\u003c\/strong\u003e successfully, especially in a new community tank.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2 id=\"feeding\"\u003eWhat Do Three-Lined Pencilfish Eat? Complete Feeding Guide\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003ethree-lined pencilfish diet\u003c\/strong\u003e is best described as omnivorous with a strong preference for small live, frozen, and fine prepared foods. In the wild, they pick at tiny aquatic invertebrates, insect larvae, and suspended edible particles. In the aquarium, they do best when offered a varied menu rather than one single staple. If you are following a proper \u003cstrong\u003ethree-lined pencilfish feeding guide\u003c\/strong\u003e, aim for small foods they can take comfortably from the upper and middle water levels.\u003c\/p\u003e\n\u003ch3\u003eStaple Foods\u003c\/h3\u003e\n\u003cp\u003eHigh-quality micro granules, crushed flakes, and small slow-sinking community foods work well as the base diet. Because their mouths are small, oversized pellets are often ignored. A practical \u003cstrong\u003ethree-lined pencilfish care guide\u003c\/strong\u003e should always mention particle size: the best food is not just nutritious, but easy to eat.\u003c\/p\u003e\n\u003ch3\u003eSupplemental Foods\u003c\/h3\u003e\n\u003cp\u003eTo improve body condition and encourage stronger colour, rotate in frozen cyclops, daphnia, baby brine shrimp, and finely chopped bloodworm in moderation. These foods are useful when conditioning adults, supporting \u003cstrong\u003ethree-lined pencilfish health\u003c\/strong\u003e, and helping new arrivals settle. A mixed diet is also helpful if you are keeping \u003cstrong\u003elive three-lined pencilfish UK\u003c\/strong\u003e purchases after shipping, as variety often stimulates feeding response during the first week.\u003c\/p\u003e\n\u003ch3\u003eTreats and Conditioning Foods\u003c\/h3\u003e\n\u003cp\u003eFor breeding attempts, offer live baby brine shrimp, microworms, and small live foods. These richer items can help bring fish into spawning condition. They should still be used sensibly because overfeeding can quickly damage water quality in a small shoaling tank.\u003c\/p\u003e\n\u003ch3\u003eFeeding Frequency and Portion Control\u003c\/h3\u003e\n\u003cp\u003eFeed adults 1-2 small meals daily, only as much as the group can finish within about 2 minutes. Juveniles can be fed smaller portions more often. If you are wondering whether this species is suitable as \u003cstrong\u003ethree-lined pencilfish for beginners\u003c\/strong\u003e, feeding is one of the easier parts of care as long as food size and water quality are both managed properly.\u003c\/p\u003e\n\u003ctable class=\"comparison-table\"\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eTime\u003c\/th\u003e\n\u003cth\u003eFood\u003c\/th\u003e\n\u003cth\u003eAmount\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMorning\u003c\/td\u003e\n\u003ctd\u003eMicro granules or crushed flake\u003c\/td\u003e\n\u003ctd\u003eSmall pinch, fully eaten in 2 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eEvening\u003c\/td\u003e\n\u003ctd\u003eFrozen cyclops, baby brine shrimp, or daphnia\u003c\/td\u003e\n\u003ctd\u003eVery small portion for the whole shoal\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eCustomers comparing \u003cstrong\u003ethree-lined pencilfish for sale UK\u003c\/strong\u003e options often ask whether these fish are fussy eaters. In a settled aquarium, no—they are usually eager, but shy individuals may hang back in bright or busy tanks. That is why feeding success depends on environment as much as food choice. A calm upper water zone, floating cover, and compatible tank mates all improve confidence at feeding time.\u003c\/p\u003e\n\u003cdiv class=\"food-recommendation\"\u003e\n  \u003ca href=\"\/products\/tropical-fish-uk\"\u003eGlass Bloodfin Tetras - Prionobrama\u003c\/a\u003e\n  \u003cp\u003eA useful companion species reference if you are planning a peaceful community that shares similar small prepared and frozen foods.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"food-recommendation\"\u003e\n  \u003ca href=\"\/products\/tropical-fish-uk\"\u003eSailfin Tetra - Crenuchus Spilurus -\u003c\/a\u003e\n  \u003cp\u003eAnother South American species that thrives on varied fine foods, ideal for aquarists comparing feeding routines in a soft-water setup.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"warning-box\"\u003e\n  \u003ch4\u003e⚠️ Feeding Warning\u003c\/h4\u003e\n  \u003cp\u003eOverfeeding causes ammonia spikes, cloudy water, and stress-related health problems. Because pencilfish are small and lightly built, excess food can foul the tank long before the fish appear visibly overfed.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2 id=\"appearance\"\u003eWhat Does the Three-Lined Pencilfish Look Like? Colors, Patterns \u0026amp; Varieties\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003ethree-lined pencilfish size\u003c\/strong\u003e at adulthood is usually 3-5cm, with a slim, elongated body that gives the species its common name. Unlike deeper-bodied tetras, pencilfish have a refined, almost stick-like profile with a slightly upturned mouth suited to feeding in the upper water layers. Their streamlined shape makes them look especially elegant in groups, where the horizontal body line becomes a repeating pattern across the aquarium.\u003c\/p\u003e\n\u003cp\u003eThe classic colour pattern includes a warm golden to bronze base tone, darker horizontal striping, and subtle red or orange highlights in the fins, especially on mature males in good condition. In soft light over dark substrate, the contrast becomes much richer. Our photos show the clean lateral lines and metallic sheen that are often lost in brightly lit dealer tanks. This is one reason the species can look far better at home than it does in a bare sales aquarium.\u003c\/p\u003e\n\u003cp\u003eIf you are researching \u003cstrong\u003ethree-lined pencilfish male vs female\u003c\/strong\u003e, males are usually slimmer, more intensely coloured, and more likely to show stronger fin tinting. Females tend to be slightly fuller-bodied, especially when carrying eggs. During social displays, males may intensify in colour and posture toward one another, but these interactions are usually brief and low risk in a properly structured aquarium.\u003c\/p\u003e\n\u003cp\u003eSome hobbyists compare this fish with the \u003ca href=\"\/products\/tropical-fish-uk\"\u003eGolden Pencilfish - Nannostomus Beckfordi\u003c\/a\u003e, which highlights the warmer gold tones within the same species group, while others prefer the more unusual look of the \u003ca href=\"\/products\/tropical-fish-uk\"\u003ePurple Pencilfish - Nannostomus Rubrocaudatus\u003c\/a\u003e. In all cases, colour is strongest when the fish are kept in groups, offered varied foods, and maintained under stable \u003cstrong\u003ethree-lined pencilfish water parameters\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003ch2 id=\"compatibility\"\u003eWhat Fish Can Live With Three-Lined Pencilfish? Compatibility Guide\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eThree-lined pencilfish tank mates\u003c\/strong\u003e should be chosen with care because this is a peaceful, somewhat shy species. The best \u003cstrong\u003ethree-lined pencilfish compatible fish\u003c\/strong\u003e are small, calm community species that enjoy similar water conditions and do not dominate feeding time. When people ask about \u003cstrong\u003ethree-lined pencilfish with other fish\u003c\/strong\u003e, the answer is yes—but only with species that respect their quiet nature.\u003c\/p\u003e\n\u003ch3\u003eIdeal Tank Mates\u003c\/h3\u003e\n\u003cp\u003eGood options include small tetras, Corydoras, Otocinclus, small rasboras, and peaceful dwarf cichlids in larger aquariums. If you are browsing \u003cstrong\u003efreshwater tetra UK\u003c\/strong\u003e or \u003cstrong\u003elive tetra UK\u003c\/strong\u003e listings, look for similarly sized species with gentle temperaments. The \u003ca href=\"\/products\/tropical-fish-uk\"\u003eGlass Bloodfin Tetras - Prionobrama\u003c\/a\u003e can work in a spacious, well-structured setup, while the \u003ca href=\"\/products\/tropical-fish-uk\"\u003eSailfin Tetra - Crenuchus Spilurus -\u003c\/a\u003e suits aquarists building a more specialised South American display. For pencilfish-focused collections, the \u003ca href=\"\/products\/tropical-fish-uk\"\u003eNannostomus Unifasciatus - One-Lined Pencilfish\u003c\/a\u003e and \u003ca href=\"\/products\/tropical-fish-uk\"\u003ePurple Pencilfish - Nannostomus Rubrocaudatus\u003c\/a\u003e are natural comparison species for a themed setup.\u003c\/p\u003e\n\u003ch3\u003eSpecies to Avoid\u003c\/h3\u003e\n\u003cp\u003eAvoid large, boisterous, or highly competitive fish. Fast barbs, large cichlids, and predatory characins can stress them badly. This is not a species to mix with \u003cstrong\u003elarge tropical fish uk\u003c\/strong\u003e centrepieces unless the aquarium is very large and carefully zoned. Predatory species such as the \u003ca href=\"\/products\/tropical-fish-uk\"\u003eGar Characins - Ctenolucius Hujeta\u003c\/a\u003e are not suitable companions, and neither are heavy-bodied omnivores like the \u003ca href=\"\/products\/tropical-fish-uk\"\u003ePiaractus Brachypomus - Red-Bellied Pacu -\u003c\/a\u003e or \u003ca href=\"\/products\/tropical-fish-uk\"\u003eRed-Bellied Pacu - Piaractus Brachypomus\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eCommunity Stocking Examples\u003c\/h3\u003e\n\u003cp\u003eIn an 80-litre planted aquarium, a sensible plan might be 10 Three-Lined Pencilfish with a small group of Corydoras and a few Otocinclus once the tank is mature. In a 100-120 litre soft-water community, 12 pencilfish can be combined with a calm tetra shoal and bottom-dwellers. If you are asking \u003cstrong\u003ebest tetra for community tank\u003c\/strong\u003e, pencilfish are not true tetras, but they compete very well in the same role for aquarists wanting a calmer upper-level shoal.\u003c\/p\u003e\n\u003ctable class=\"comparison-table\"\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecies\u003c\/th\u003e\n\u003cth\u003eCompatible?\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003ca href=\"\/products\/tropical-fish-uk\"\u003eGlass Bloodfin Tetras - Prionobrama\u003c\/a\u003e\u003c\/td\u003e\n      \u003ctd\u003e✅ Yes\u003c\/td\u003e\n      \u003ctd\u003eWorks in a peaceful, planted community with similar water conditions.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003ca href=\"\/products\/tropical-fish-uk\"\u003eSailfin Tetra - Crenuchus Spilurus -\u003c\/a\u003e\u003c\/td\u003e\n      \u003ctd\u003e⚠️ Caution\u003c\/td\u003e\n      \u003ctd\u003ePossible in a larger, calm South American setup; monitor feeding dynamics.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003ca href=\"\/products\/tropical-fish-uk\"\u003eGar Characins - Ctenolucius Hujeta\u003c\/a\u003e\u003c\/td\u003e\n      \u003ctd\u003e❌ Avoid\u003c\/td\u003e\n      \u003ctd\u003ePredatory and unsuitable for small pencilfish.\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eCommon comparison questions include \u003cstrong\u003ethree-lined pencilfish vs neon tetra\u003c\/strong\u003e, \u003cstrong\u003ethree-lined pencilfish vs cardinal tetra\u003c\/strong\u003e, \u003cstrong\u003ethree-lined pencilfish or ember tetra\u003c\/strong\u003e, and \u003cstrong\u003ethree-lined pencilfish vs rummy nose tetra\u003c\/strong\u003e. In general, pencilfish are more understated, more surface-oriented, and often a little shyer. Neon and cardinal tetras bring stronger colour impact, while rummy noses bring tighter schooling. Pencilfish win when you want a gentler, more natural upper-level fish in a planted blackwater-style layout.\u003c\/p\u003e\n\u003cp\u003eFor shrimp and snails, compatibility depends on shrimp size and cover. Adult shrimp may coexist in heavily planted tanks, but very small shrimplets can be eaten. Snails are generally fine. If you are building a carefully balanced \u003cstrong\u003ebest tropical fish uk\u003c\/strong\u003e community, the key is to avoid any species that creates constant pressure in the upper water column.\u003c\/p\u003e\n\u003cdiv class=\"tip-box\"\u003e\n  \u003ch4\u003e💡 Compatibility Tip\u003c\/h4\u003e\n  \u003cp\u003eAlways quarantine new arrivals for 2-4 weeks before adding them to a community tank. This protects established fish and gives you time to observe feeding, colour, and any early signs of disease.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2 id=\"breeding\"\u003eHow Do You Breed Three-Lined Pencilfish? Complete Breeding Guide\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eThree-lined pencilfish breeding\u003c\/strong\u003e is moderate in difficulty. They are egg scatterers rather than attentive parents, so success depends on setup and timing rather than pair bonding. For aquarists exploring \u003cstrong\u003etropical fish uk online\u003c\/strong\u003e options with an eye toward breeding projects, this is a satisfying species because it rewards careful observation and environmental control.\u003c\/p\u003e\n\u003ch3\u003eBreeding Setup\u003c\/h3\u003e\n\u003cp\u003eUse a separate breeding tank of around 20-40 litres with soft, slightly acidic water, subdued light, and plenty of fine plants or spawning mops. Keep the temperature around 25-27°C. A sponge filter is ideal. Conditioning adults with live and frozen foods before spawning improves results. This is especially useful if you \u003cstrong\u003ebuy tropical fish online uk\u003c\/strong\u003e and want to settle the fish before attempting reproduction.\u003c\/p\u003e\n\u003ch3\u003eSpawning Behaviour\u003c\/h3\u003e\n\u003cp\u003eMales display to females with subtle posture changes and stronger colour. Spawning usually occurs among fine plants where eggs are scattered and left unattended. Adults may eat eggs, so remove the parents after spawning or use a setup that allows eggs to fall out of reach. If you \u003cstrong\u003eorder tropical fish online uk\u003c\/strong\u003e for breeding, give them several weeks to mature and settle before expecting results.\u003c\/p\u003e\n\u003ch3\u003eEgg Care and Hatching\u003c\/h3\u003e\n\u003cp\u003eEggs usually hatch within roughly 24-48 hours depending on temperature. Keep the tank dim because eggs and larvae can be light-sensitive. Once free-swimming, fry need very small foods such as infusoria, vinegar eels, or powdered fry food before moving onto baby brine shrimp.\u003c\/p\u003e\n\u003ch3\u003eFry Care and Growth\u003c\/h3\u003e\n\u003cp\u003eFrequent small water changes are essential, but avoid sudden chemistry swings. Fry are delicate and benefit from stable warmth, clean water, and microscopic first foods. For aquarists interested in \u003cstrong\u003etropical fish delivery uk\u003c\/strong\u003e and long-term breeding projects, this species is more realistic in a dedicated fish room or mature planted system than in a casual mixed community.\u003c\/p\u003e\n\u003ch3\u003eCommon Challenges\u003c\/h3\u003e\n\u003cp\u003eThe biggest problems are infertile eggs, adults eating the spawn, and fry starvation due to oversized food. Soft water, live conditioning foods, and dim lighting improve the odds. If you are \u003cstrong\u003ebuying tropical fish online uk\u003c\/strong\u003e specifically for breeding, try to source a healthy group rather than a random pair, as group dynamics often produce better results.\u003c\/p\u003e\n\u003cdiv class=\"tip-box\"\u003e\n  \u003ch4\u003eAdvanced Breeding Tip\u003c\/h4\u003e\n  \u003cp\u003eUse a thin layer of marbles or a mesh spawning grid over the tank base so eggs drop beyond the reach of the adults. In very soft water with fine-leaved plants and low light, this simple adjustment can increase fry yield dramatically.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003eWhether you are browsing \u003cstrong\u003etropical fish for sale uk\u003c\/strong\u003e, \u003cstrong\u003eonline tropical fish uk\u003c\/strong\u003e, \u003cstrong\u003etropical fish online uk\u003c\/strong\u003e, \u003cstrong\u003etropical fish uk buy online\u003c\/strong\u003e, or \u003cstrong\u003etropical fish for sale online uk\u003c\/strong\u003e, breeding success always starts with healthy, settled stock and stable conditions—not just the initial purchase.\u003c\/p\u003e\n\n\u003ch2 id=\"comparison\"\u003eHow Does the Three-Lined Pencilfish Compare With Similar Species?\u003c\/h2\u003e\n\u003cp\u003eComparison matters because many aquarists searching \u003cstrong\u003ebuy tetra UK\u003c\/strong\u003e, \u003cstrong\u003etetra for sale UK\u003c\/strong\u003e, or \u003cstrong\u003eaquarium tetra UK\u003c\/strong\u003e are really deciding between several small peaceful community fish that fill a similar visual role. The Three-Lined Pencilfish is often compared with neon tetras, cardinal tetras, ember tetras, and other pencilfish species. It is a better choice when you want a subtler, more natural look and calmer upper-level movement.\u003c\/p\u003e\n\u003ctable class=\"comparison-table\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eThree-Lined Pencilfish\u003c\/th\u003e\n\u003cth\u003eNeon Tetra\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMax Size\u003c\/td\u003e\n\u003ctd\u003e3-5cm\u003c\/td\u003e\n\u003ctd\u003e3.5-4cm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCare Level\u003c\/td\u003e\n\u003ctd\u003eIntermediate\u003c\/td\u003e\n\u003ctd\u003eEasy to intermediate\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTemperature\u003c\/td\u003e\n\u003ctd\u003e22-28°C\u003c\/td\u003e\n\u003ctd\u003e20-26°C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePrice\u003c\/td\u003e\n\u003ctd\u003e£23.22\u003c\/td\u003e\n\u003ctd\u003eVaries\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBest For\u003c\/td\u003e\n\u003ctd\u003eCalm planted and blackwater-style tanks\u003c\/td\u003e\n\u003ctd\u003eBright classic community displays\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable class=\"comparison-table\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eThree-Lined Pencilfish\u003c\/th\u003e\n\u003cth\u003eGolden Pencilfish\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMax Size\u003c\/td\u003e\n\u003ctd\u003e3-5cm\u003c\/td\u003e\n\u003ctd\u003e3-5cm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCare Level\u003c\/td\u003e\n\u003ctd\u003eIntermediate\u003c\/td\u003e\n\u003ctd\u003eIntermediate\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTemperature\u003c\/td\u003e\n\u003ctd\u003e22-28°C\u003c\/td\u003e\n\u003ctd\u003e22-28°C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePrice\u003c\/td\u003e\n\u003ctd\u003e£23.22\u003c\/td\u003e\n\u003ctd\u003eVaries\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBest For\u003c\/td\u003e\n\u003ctd\u003eNatural striped look\u003c\/td\u003e\n\u003ctd\u003eWarmer gold-toned display\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eIn a \u003cstrong\u003ebest tetra species comparison\u003c\/strong\u003e, pencilfish are usually less flashy than cardinals but more nuanced in shape and behaviour. If you want a fish that hovers elegantly near the surface and complements wood, leaves, and plants, the Three-Lined Pencilfish is often the better pick. If you want instant colour impact in a brighter community aquarium, neon or cardinal tetras may be more suitable.\u003c\/p\u003e\n\u003cp\u003eWithin the pencilfish group, the \u003ca href=\"\/products\/tropical-fish-uk\"\u003eNannostomus Unifasciatus - One-Lined Pencilfish\u003c\/a\u003e offers a slimmer, more minimal look, while the \u003ca href=\"\/products\/tropical-fish-uk\"\u003ePurple Pencilfish - Nannostomus Rubrocaudatus\u003c\/a\u003e appeals to hobbyists seeking something more unusual. The \u003ca href=\"\/products\/tropical-fish-uk\"\u003eGolden Pencilfish - Nannostomus Beckfordi\u003c\/a\u003e is especially close in care and makes sense for aquarists who love the species but want warmer tones.\u003c\/p\u003e\n\n\u003ch2 id=\"health\"\u003eWhat Are the Common Health Problems in Three-Lined Pencilfish and How Can You Prevent Them?\u003c\/h2\u003e\n\u003cp\u003eGood \u003cstrong\u003ethree-lined pencilfish health\u003c\/strong\u003e starts with stability. These fish are not especially disease-prone, but they are sensitive to stress, poor transport recovery, and deteriorating water quality. The most common problems seen in newly acquired fish include clamped fins, faded colour, poor appetite, and hovering in corners. These signs do not always indicate a specific disease; often they point to stress, unsuitable tank mates, or poor acclimation.\u003c\/p\u003e\n\u003ch3\u003eSigns of a Healthy Fish\u003c\/h3\u003e\n\u003cp\u003eA healthy Three-Lined Pencilfish should hold position calmly in the upper-middle water, feed eagerly, show clear eyes, intact fins, and a defined body stripe. In settled groups, you will also see mild social displays and coordinated movement through cover. Strong appetite and relaxed posture are often the best early indicators of success after \u003cstrong\u003ethree-lined pencilfish delivery UK\u003c\/strong\u003e or acclimation.\u003c\/p\u003e\n\u003ch3\u003eCommon Diseases and Symptoms\u003c\/h3\u003e\n\u003cp\u003eTypical \u003cstrong\u003ethree-lined pencilfish diseases\u003c\/strong\u003e in the aquarium include ich, bacterial fin damage secondary to stress, and wasting caused by internal parasites or chronic underfeeding. Because they are small, deterioration can happen quickly if the fish are outcompeted by faster species. Watch for white spots, frayed fins, hollow bellies, rapid breathing, and isolation from the group.\u003c\/p\u003e\n\u003ch3\u003eTreatment and Prevention\u003c\/h3\u003e\n\u003cp\u003eThe best treatment plan begins with water testing, partial water changes, and isolation where needed. Keep temperature stable, improve oxygenation gently, and avoid adding strong medications without a diagnosis. Prevention is better: maintain clean water, offer a varied diet, keep proper group size, and avoid aggressive companions. This is especially important for anyone asking \u003cstrong\u003ewhere to buy three-lined pencilfish UK\u003c\/strong\u003e or comparing a \u003cstrong\u003ethree-lined pencilfish shop UK\u003c\/strong\u003e; healthy stock and careful post-arrival care matter more than chasing the lowest \u003cstrong\u003ethree-lined pencilfish price UK\u003c\/strong\u003e or looking for \u003cstrong\u003echeap three-lined pencilfish UK\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cdiv class=\"warning-box\"\u003e\n  \u003ch4\u003e⚠️ Health Warning\u003c\/h4\u003e\n  \u003cp\u003eNever medicate a display tank casually. Small characiform fish can react badly to unnecessary treatment, and if shrimp are present, copper-based medications can be lethal.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"info-box\"\u003e\n  \u003ch4\u003eQuarantine Protocol\u003c\/h4\u003e\n  \u003cul\u003e\n    \u003cli\u003eUse a separate tank for 2-4 weeks\u003c\/li\u003e\n    \u003cli\u003eMatch temperature and pH closely to the main aquarium\u003c\/li\u003e\n    \u003cli\u003eObserve appetite, respiration, and body condition daily\u003c\/li\u003e\n    \u003cli\u003ePerform small regular water changes\u003c\/li\u003e\n    \u003cli\u003eOnly move fish once they are feeding strongly and symptom-free\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2 id=\"behavior\"\u003eWhat Is Three-Lined Pencilfish Behaviour Like in the Aquarium?\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eThree-lined pencilfish behaviour\u003c\/strong\u003e is one of the species' biggest attractions. They are peaceful, lightly active, and often hover or cruise in the upper-middle layers with a poised, almost suspended look. They are not frantic swimmers, which makes them ideal for aquarists who prefer a calm display. In a proper shoal, they become much bolder and spend more time out in the open.\u003c\/p\u003e\n\u003cp\u003eThis species is social rather than tightly schooling in the way rummy nose tetras often do. They form a loose shoal and use plants and wood as reference points, moving in and out of cover throughout the day. Males may posture toward one another, especially in breeding condition, but serious damage is rare in a well-designed aquarium.\u003c\/p\u003e\n\u003cp\u003eIf you are wondering whether they are suitable as \u003cstrong\u003ethree-lined pencilfish for beginners\u003c\/strong\u003e, the answer is yes for patient beginners who can provide stable water and a thoughtful community. They are less forgiving of chaotic stocking than some common tetras, but very rewarding in a mature planted aquarium. To encourage natural behaviour, keep a proper group, use floating cover, and avoid harsh lighting or noisy tank mates.\u003c\/p\u003e\n\n\u003ch2 id=\"why-buy\"\u003eWhy Buy from Tropical Fish Co?\u003c\/h2\u003e\n\u003cp\u003eWhen customers \u003cstrong\u003ebuy three-lined pencilfish UK\u003c\/strong\u003e, they usually want more than a fish list and a box in the post. They want healthy, settled stock, accurate care information, and realistic support on compatibility, feeding, and acclimation. For this species, that matters because pencilfish can arrive shy if rushed into bright, busy aquariums. Careful holding and preparation make a visible difference.\u003c\/p\u003e\n\u003cp\u003eOur approach for \u003cstrong\u003ethree-lined pencilfish online UK\u003c\/strong\u003e orders is built around stability. Fish are observed before dispatch, assessed for feeding response and body condition, and packed with their size and temperament in mind. Because this is a delicate shoaling species, proper bagging density, insulation, and temperature control are especially important. For \u003cstrong\u003euk tropical fish delivery\u003c\/strong\u003e, fish are shipped in insulated packaging, with heat packs used in colder weather where appropriate, and sent by tracked delivery to reduce transit stress.\u003c\/p\u003e\n\u003cp\u003eWe also know that customers searching \u003cstrong\u003ebest place to buy tropical fish online uk\u003c\/strong\u003e, \u003cstrong\u003ebuy aquarium fish online uk\u003c\/strong\u003e, \u003cstrong\u003ebuy tropical fish online uk free delivery\u003c\/strong\u003e, \u003cstrong\u003etropical fish delivered uk\u003c\/strong\u003e, \u003cstrong\u003etropical fish for sale near me\u003c\/strong\u003e, \u003cstrong\u003etropical fish for sale online\u003c\/strong\u003e, \u003cstrong\u003etropical fish sale uk\u003c\/strong\u003e, \u003cstrong\u003etropical fish for sale in uk\u003c\/strong\u003e, \u003cstrong\u003etropical fish for sale in the uk\u003c\/strong\u003e, \u003cstrong\u003etropical fish buy online uk\u003c\/strong\u003e, or \u003cstrong\u003eorder three-lined pencilfish UK\u003c\/strong\u003e are often comparing convenience against fish welfare. That is why each order is backed by practical acclimation guidance, and why we recommend introducing this species into a mature, planted setup rather than a fresh, brightly lit tank.\u003c\/p\u003e\n\u003cp\u003eIf you are looking for \u003cstrong\u003ethree-lined pencilfish for sale UK\u003c\/strong\u003e and want a species that rewards careful fishkeeping with elegant behaviour and subtle beauty, this is an excellent choice. \u003cstrong\u003eOrder your Three-Lined Pencilfish today with confidence\u003c\/strong\u003e if you already have the right soft-water community or planted aquarium ready.\u003c\/p\u003e\n\u003cdiv class=\"care-highlight\"\u003e\n  \u003ch4\u003eWhy Choose Tropical Fish Co for Three-Lined Pencilfish\u003c\/h4\u003e\n  \u003cul\u003e\n    \u003cli\u003eStock selected for active feeding response and good stripe definition before dispatch\u003c\/li\u003e\n    \u003cli\u003eHandled as a peaceful shoaling species, with packing methods suited to shy upper-level fish\u003c\/li\u003e\n    \u003cli\u003eClear care guidance on group size, acclimation, and planted community compatibility\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2 id=\"related-products\"\u003eYou Might Also Like\u003c\/h2\u003e\n\u003cp\u003eBuilding a calm South American display around Three-Lined Pencilfish? Consider the \u003ca href=\"\/products\/tropical-fish-uk\"\u003eNannostomus Unifasciatus - One-Lined Pencilfish\u003c\/a\u003e for a similarly elegant top-level species, or the \u003ca href=\"\/products\/tropical-fish-uk\"\u003ePurple Pencilfish - Nannostomus Rubrocaudatus\u003c\/a\u003e if you want a more unusual pencilfish look. The \u003ca href=\"\/products\/tropical-fish-uk\"\u003eGolden Pencilfish - Nannostomus Beckfordi\u003c\/a\u003e is another excellent option for aquarists who love the species but want warmer colour tones.\u003c\/p\u003e\u003cp\u003eFor compatible community ideas, the \u003ca href=\"\/products\/tropical-fish-uk\"\u003eGlass Bloodfin Tetras - Prionobrama\u003c\/a\u003e and \u003ca href=\"\/products\/tropical-fish-uk\"\u003eSailfin Tetra - Crenuchus Spilurus -\u003c\/a\u003e are worth comparing for peaceful soft-water setups. If you are browsing the wider \u003ca href=\"\/products\/tropical-fish-uk\"\u003etropical fish UK collection\u003c\/a\u003e, you can also explore other \u003cstrong\u003esouth american tropical fish UK\u003c\/strong\u003e species suited to planted aquariums and blackwater-inspired layouts.\u003c\/p\u003e","brand":"Tropical Fish Co","offers":[{"title":"1.5-2 cm","offer_id":57379661447503,"sku":"2405","price":27.99,"currency_code":"GBP","in_stock":false},{"title":"3-4 cm","offer_id":57560366022991,"sku":"2396","price":6.99,"currency_code":"GBP","in_stock":false},{"title":"4.5-5 cm","offer_id":57560366055759,"sku":"2397","price":7.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/1408\/6735\/files\/three-lined-pencilfish-nannostomus-trifasciatus-south-a-hero-driftwood-2405.webp?v=1777814265","url":"https:\/\/tropical-fish-co.myshopify.com\/products\/tropical-fish-uk-pencilfish-for-sale","provider":"Tropical Fish Co","version":"1.0","type":"link"}