{"product_id":"paracheirodon-simulans-nematobrycon-palmeri-royal-tetra-uk","title":"Royal Tetras - UK","description":"\u003cp\u003eIf you want a peaceful shoaling fish that adds movement, colour contrast, and a refined South American look, these X Royal Tetras are a brilliant choice for a \u003cstrong\u003etropical fish UK\u003c\/strong\u003e aquarium. In the hobby, the name “Royal Tetra” is often used for \u003cem\u003eInpaichthys kerri\u003c\/em\u003e, also called the \u003cstrong\u003ekerri blue tetra\u003c\/strong\u003e or \u003cstrong\u003eInpaichthys Kerri\u003c\/strong\u003e, while some aquarists also compare them with emperor tetras. This listing focuses on the elegant blue-toned royal tetra type loved by community keepers for its calm nature, metallic sheen, and easy-going care. Adults typically reach around \u003cstrong\u003eroyal tetras size\u003c\/strong\u003e of 4-5 cm, with a potential \u003cstrong\u003eroyal tetras lifespan\u003c\/strong\u003e of around 4-6 years when kept in stable conditions. They are widely recommended as \u003cstrong\u003eroyal tetras for beginners\u003c\/strong\u003e because their \u003cstrong\u003eroyal tetras behaviour\u003c\/strong\u003e is peaceful, their diet is flexible, and they settle well into a mature community aquarium.\u003c\/p\u003e\u003cp\u003eSee our detailed photos showing the violet-blue body glow, darker rear half, and elegant schooling posture that make them stand out in planted displays. Whether you are researching \u003cstrong\u003ehow to care for royal tetras\u003c\/strong\u003e, comparing \u003cstrong\u003eroyal tetras vs neon tetra\u003c\/strong\u003e, or planning \u003cstrong\u003eroyal tetras with other fish\u003c\/strong\u003e, this guide covers setup, feeding, compatibility, breeding, health, and buying advice in one place. For aquarists searching for \u003cstrong\u003etropical fish UK for sale\u003c\/strong\u003e, \u003cstrong\u003ebuy royal tetras UK\u003c\/strong\u003e, or \u003cstrong\u003elive royal tetras UK\u003c\/strong\u003e, these fish offer a practical mix of beauty, manageable care, and strong community potential.\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\u003eInpaichthys kerri\u003c\/em\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCare Level:\u003c\/strong\u003e Easy\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMin Tank Size:\u003c\/strong\u003e 80 litres (around 17.5 gallons)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTemperature:\u003c\/strong\u003e 23-27°C (73-81°F)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003epH Range:\u003c\/strong\u003e 5.5-7.5\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eLifespan:\u003c\/strong\u003e Up to 6 years\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTemperament:\u003c\/strong\u003e Peaceful\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 Characidae \/ closely associated American characins in aquarium literature\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eGenus:\u003c\/strong\u003e \u003cem\u003eInpaichthys\u003c\/em\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003e\u003cem\u003eInpaichthys kerri\u003c\/em\u003e is a South American characin from Brazil and has long been appreciated in the aquarium hobby as a graceful, blue-sheened tetra for soft-water community tanks. It is not the same species as \u003cem\u003eNematobrycon palmeri\u003c\/em\u003e, though aquarists sometimes confuse common names such as emperor tetra and royal tetra. In practical fishkeeping terms, this fish sits alongside other peaceful South American tetra species prized for shoaling behaviour, subtle iridescence, and compatibility in planted aquariums.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2 id=\"origin\"\u003eWhere Do Royal Tetras Come From? Natural Habitat Explained\u003c\/h2\u003e\n\u003cp\u003eThe true \u003cstrong\u003eroyal tetras habitat\u003c\/strong\u003e is in South America, specifically Brazil, where \u003cstrong\u003enematobrycon palmeri wild\u003c\/strong\u003e would be incorrect for this species but \u003cstrong\u003eInpaichthys Kerri\u003c\/strong\u003e is associated with tributaries connected to the Aripuanã River system. In the wild, these fish are found in calm to gently flowing freshwater with leaf litter, submerged roots, and filtered light from overhanging vegetation. That natural setting helps explain why \u003cstrong\u003eroyal tetras in planted tank\u003c\/strong\u003e layouts look so natural and why subdued lighting often brings out richer colour.\u003c\/p\u003e\n\u003cp\u003eAlthough some hobby searches mix this species with \u003cstrong\u003eparacheirodon simulans habitat\u003c\/strong\u003e, \u003cstrong\u003eparacheirodon simulans biotope\u003c\/strong\u003e, or \u003cstrong\u003eparacheirodon simulans wild\u003c\/strong\u003e, the care style overlaps in one useful way: both appreciate clean, mature water and a calm, well-structured aquarium. In nature, royal tetras pick at tiny invertebrates, organic matter, and fine food particles. That broad feeding style is one reason their captive care is straightforward. Their native waters are usually soft to moderately soft, slightly acidic to near neutral, and shaded by marginal plants and forest cover.\u003c\/p\u003e\n\u003cp\u003eFor aquarists, understanding this background makes it easier to recreate \u003cstrong\u003eroyal tetras ideal conditions\u003c\/strong\u003e. Think dark substrate, driftwood, patches of open swimming space, and planting around the sides and back. This helps reduce stress, improve colour, and support natural shoaling. If you have ever wondered \u003cstrong\u003ewhy paracheirodon simulans\u003c\/strong\u003e and royal tetra style fish look best in dimmer, naturalistic tanks, the answer is simple: their wild environment is not a bright, bare glass box.\u003c\/p\u003e\n\u003cp\u003eBecause this species is peaceful and adaptable, it works well in a home aquarium when you focus on stability rather than chasing extreme numbers. Good water quality is far more important than trying to copy every blackwater detail exactly. For most keepers in the \u003cstrong\u003eaquarium tetra UK\u003c\/strong\u003e hobby, a mature planted setup with regular maintenance is enough to keep them thriving.\u003c\/p\u003e\n\u003cdiv class=\"tip-box\"\u003e\n  \u003ch4\u003e💡 Expert Tip\u003c\/h4\u003e\n  \u003cp\u003eMimicking the natural habitat with darker substrate, wood, floating cover, and gentle flow improves confidence, reduces washed-out colour, and encourages tighter shoaling. In our experience, newly introduced royal tetras settle faster when the tank has visual barriers and at least two shaded areas.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2 id=\"tank-setup\"\u003eHow to Set Up the Perfect Tank for Royal Tetras\u003c\/h2\u003e\n\u003cp\u003eA successful \u003cstrong\u003eroyal tetras tank setup\u003c\/strong\u003e starts with space for a proper group. While the \u003cstrong\u003eroyal tetras minimum tank size\u003c\/strong\u003e is 80 litres, that should be treated as a true minimum for a small shoal. A better \u003cstrong\u003eroyal tetras tank size\u003c\/strong\u003e for long-term care is 90-120 litres if you want stronger schooling, easier maintenance, and room for compatible species. If you are asking \u003cstrong\u003ehow many royal tetras in a tank\u003c\/strong\u003e, start with 8-10 fish in an 80 litre aquarium and increase group size in larger tanks. They are calmer and more attractive in numbers.\u003c\/p\u003e\n\u003ch3\u003eTank Size Requirements\u003c\/h3\u003e\n\u003cp\u003eThe ideal footprint matters more than height. These fish use the middle level and appreciate horizontal swimming room. A beginner often asks, \u003cstrong\u003ewhat is a good size fish tank for a beginner\u003c\/strong\u003e? For royal tetras, a mature 80 litre or larger aquarium is far easier than a nano tank because water chemistry stays more stable. If you are also wondering \u003cstrong\u003ewhat size fish should i get\u003c\/strong\u003e, small peaceful shoaling fish like royal tetras are a much safer beginner choice than larger characins such as the \u003ca href=\"\/products\/tropical-fish-uk\"\u003eRed-Bellied Pacu\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWater Parameters\u003c\/h3\u003e\n\u003cp\u003eThe best \u003cstrong\u003eroyal tetras water parameters\u003c\/strong\u003e are a temperature of 23-27°C, pH 5.5-7.5, and hardness around 3-15 dGH. In practical terms, aim for the middle of that range rather than the extremes. The recommended \u003cstrong\u003eroyal tetras water temperature\u003c\/strong\u003e is 24-26°C for routine care. If you see searches for \u003cstrong\u003eroyal tetras temperature\u003c\/strong\u003e, this is the range to follow. Stable warmth is more important than daily fluctuation. Their preferred \u003cstrong\u003eroyal tetras water hardness\u003c\/strong\u003e is soft to moderately hard, and they usually show their best colour in slightly softer water.\u003c\/p\u003e\n\u003cdiv class=\"spec-grid\"\u003e\n  \u003cdiv class=\"spec-card\"\u003e\n    \u003cdiv class=\"spec-value\"\u003e80L+\u003c\/div\u003e\n    \u003cdiv class=\"spec-label\"\u003eMinimum tank\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"spec-card\"\u003e\n    \u003cdiv class=\"spec-value\"\u003e23-27°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\"\u003e5.5-7.5\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\"\u003e3-15 dGH\u003c\/div\u003e\n    \u003cdiv class=\"spec-label\"\u003eHardness\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eFiltration\u003c\/h3\u003e\n\u003cp\u003eYour \u003cstrong\u003eroyal tetras filtration needs\u003c\/strong\u003e are moderate. They do not need heavy current, but they do need clean, oxygenated water with low waste buildup. A well-sized internal filter, hang-on-back filter, or gentle external filter works well as long as flow is not blasting the shoal. Direct the outlet toward the glass or use plants and wood to break the current. This species appreciates consistency, so avoid under-filtering.\u003c\/p\u003e\n\u003ch3\u003eSubstrate, Plants and Decor\u003c\/h3\u003e\n\u003cp\u003eA dark sand or fine gravel substrate helps the blue-purple sheen stand out. For a natural \u003cstrong\u003eroyal tetras aquarium setup\u003c\/strong\u003e, include driftwood, leaf-style décor, and dense planting around the edges. Royal tetras are excellent \u003cstrong\u003eroyal tetras in planted tank\u003c\/strong\u003e fish because they use open central water while still retreating into cover when startled. Fine-leaved plants and floating cover can make a visible difference to confidence and colour.\u003c\/p\u003e\n\u003cp\u003eThey also combine nicely with other peaceful South American species such as \u003ca href=\"\/products\/tropical-fish-uk\"\u003eGlass Bloodfin Tetras - Prionobrama\u003c\/a\u003e, \u003ca href=\"\/products\/tropical-fish-uk\"\u003eSplash Tetra - Copella Arnoldi\u003c\/a\u003e, and \u003ca href=\"\/products\/tropical-fish-uk\"\u003eThree-Lined Pencilfish - Nannostomus Trifasciatus\u003c\/a\u003e in a carefully planned display.\u003c\/p\u003e\n\u003ch3\u003eLighting Requirements\u003c\/h3\u003e\n\u003cp\u003eModerate lighting is best. Very bright light can make them appear washed out unless you provide floating plants or shaded zones. Around 6-8 hours daily is usually enough in a planted community setup. If you are trying to bring out the metallic body line shown in the product image \u003cstrong\u003etropical-fish-uk.webp\u003c\/strong\u003e, contrast is key: darker substrate, green plants, and side lighting work better than intense white overhead light.\u003c\/p\u003e\n\u003cdiv class=\"info-box\"\u003e\n  \u003ch4\u003e🔹 Quick Setup Checklist\u003c\/h4\u003e\n  \u003cul\u003e\n    \u003cli\u003eChoose an 80 litre or larger mature aquarium\u003c\/li\u003e\n    \u003cli\u003eKeep a group of at least 8-10 fish\u003c\/li\u003e\n    \u003cli\u003eMaintain 24-26°C for everyday care\u003c\/li\u003e\n    \u003cli\u003eUse gentle but effective filtration\u003c\/li\u003e\n    \u003cli\u003eAdd plants, wood, and shaded areas\u003c\/li\u003e\n    \u003cli\u003eLeave open midwater swimming space\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 cycled tank is the difference between a settled shoal and fish that clamp fins, hide, or suffer preventable stress-related illness.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2 id=\"feeding\"\u003eWhat Do Royal Tetras Eat? Complete Feeding Guide\u003c\/h2\u003e\n\u003cp\u003eThe ideal \u003cstrong\u003eroyal tetras diet\u003c\/strong\u003e is varied, light, and offered in portions they can finish quickly. As omnivores, they accept quality micro pellets, crushed flakes, and small frozen foods. A balanced \u003cstrong\u003eroyal tetras feeding guide\u003c\/strong\u003e should include a staple dry food plus regular protein-rich extras such as daphnia, cyclops, baby brine shrimp, or finely chopped bloodworm. This variety supports colour, body condition, and breeding readiness.\u003c\/p\u003e\n\u003ch3\u003eStaple Foods\u003c\/h3\u003e\n\u003cp\u003eUse a high-quality small tropical pellet or flake designed for community fish. Their mouths are small, so food must be appropriately sized. This is one area where many beginners overestimate portion size. Feed only what the group clears in around 30-60 seconds.\u003c\/p\u003e\n\u003ch3\u003eSupplemental Foods\u003c\/h3\u003e\n\u003cp\u003eFrozen and live foods are excellent 2-4 times per week. They stimulate stronger feeding response and often improve colour intensity. If you have read \u003cstrong\u003eparacheirodon simulans diet\u003c\/strong\u003e or \u003cstrong\u003eparacheirodon simulans care\u003c\/strong\u003e guides, the same principle applies here: small, frequent, varied foods are better than large heavy meals.\u003c\/p\u003e\n\u003ch3\u003eTreats and Conditioning Foods\u003c\/h3\u003e\n\u003cp\u003eFor conditioning adults before spawning, increase fine live or frozen foods. This supports \u003cstrong\u003eroyal tetras breeding\u003c\/strong\u003e and helps females fill out with eggs. Similar advice appears in \u003cstrong\u003esuper blue kerri tetra care\u003c\/strong\u003e discussions because blue-toned characins respond well to regular protein-rich feeding.\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 pellet or crushed flake\u003c\/td\u003e\n\u003ctd\u003eSmall pinch, eaten within 1 minute\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eEvening\u003c\/td\u003e\n\u003ctd\u003eFrozen daphnia, cyclops, or baby brine shrimp\u003c\/td\u003e\n\u003ctd\u003eVery small portion\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eIf customers ask about \u003cstrong\u003eaquarium fish food for sale near me\u003c\/strong\u003e, the important point is not just availability but choosing food small enough for tetra mouths. If you are building a community around royal tetras and pencilfish, use fine foods rather than large cichlid pellets. For keepers searching \u003cstrong\u003ebuy aquarium fish online UK\u003c\/strong\u003e and wanting one simple rule: feed lightly, feed variety, and remove leftovers.\u003c\/p\u003e\n\u003cdiv class=\"food-recommendation\"\u003e\n  \u003ca href=\"\/products\/tropical-fish-uk\"\u003eGlass Bloodfin Tetras - Prionobrama\u003c\/a\u003e — A useful community comparison species when choosing suitable small-food feeding routines for peaceful characins.\u003c\/div\u003e\n\u003cdiv class=\"food-recommendation\"\u003e\n  \u003ca href=\"\/products\/tropical-fish-uk\"\u003eThree-Lined Pencilfish - Nannostomus Trifasciatus\u003c\/a\u003e — Another gentle mid-to-top water fish that thrives on the same fine frozen and dry foods.\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 stressed fish. Royal tetras are small, so excess food quickly becomes a water quality problem. Feed less than you think, especially in newer aquariums.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2 id=\"appearance\"\u003eWhat Do Royal Tetras Look Like? Colors, Patterns \u0026amp; Varieties\u003c\/h2\u003e\n\u003cp\u003eThe appeal of this species is its understated but striking colour. The body is slender and laterally compressed, with a shimmering blue-violet to purple tone that can deepen over a darker background. Many aquarists compare them with the \u003cstrong\u003esuper blue kerri tetra\u003c\/strong\u003e, and the names are often used loosely in the trade. The classic \u003cstrong\u003ekerri blue tetra\u003c\/strong\u003e look is a cool metallic body with a darker rear section and a subtle line that becomes more obvious under angled light.\u003c\/p\u003e\n\u003cp\u003eAdult fish usually reach 4-5 cm, so if you are checking \u003cstrong\u003esuper blue kerri tetra size\u003c\/strong\u003e, expect a similar small community-friendly profile. Searches such as \u003cstrong\u003einpaichthys kerri super blue l tetra royal\u003c\/strong\u003e reflect how often hobbyists group these blue characins together by appearance. In a planted aquarium, the fish show their best contrast against dark substrate and green leaves.\u003c\/p\u003e\n\u003cp\u003eSexing is possible with mature fish. In \u003cstrong\u003eroyal tetras male vs female\u003c\/strong\u003e comparisons, males are typically slimmer, more intensely coloured, and may appear slightly more elongated in finnage and posture. Females are usually rounder through the belly, especially when carrying eggs. Good feeding, low stress, and stable water are the main colour enhancement tools. Our photos show the rich blue-purple sheen achieved through shaded planting, clean water, and a settled shoal rather than harsh lighting.\u003c\/p\u003e\n\u003cp\u003eSome hobby searches also mix this fish with \u003cstrong\u003eparacheirodon simulans green neon tetra\u003c\/strong\u003e, but the visual effect is different. Green neon tetras flash a brighter stripe, while royal tetras offer deeper body colour and a more stately look. If you prefer subtle elegance over a bright fluorescent line, royal tetras are often the better choice.\u003c\/p\u003e\n\n\u003ch2 id=\"compatibility\"\u003eWhat Fish Can Live With Royal Tetras? Compatibility Guide\u003c\/h2\u003e\n\u003cp\u003eOne reason royal tetras are often suggested as the \u003cstrong\u003ebest tetra for community tank\u003c\/strong\u003e setups is their calm, manageable temperament. Good \u003cstrong\u003eroyal tetras tank mates\u003c\/strong\u003e are other peaceful fish that enjoy similar water conditions and do not nip fins or outcompete them at feeding time. The best \u003cstrong\u003eroyal tetras compatible fish\u003c\/strong\u003e are small to medium characins, pencilfish, peaceful dwarf cichlids, small Corydoras, and gentle surface fish.\u003c\/p\u003e\n\u003ch3\u003eIdeal Tank Mates\u003c\/h3\u003e\n\u003cp\u003eFor a South American style community, consider \u003ca href=\"\/products\/tropical-fish-uk\"\u003eGlass Bloodfin Tetras - Prionobrama\u003c\/a\u003e for active upper-midwater movement, \u003ca href=\"\/products\/tropical-fish-uk\"\u003eSplash Tetra - Copella Arnoldi\u003c\/a\u003e for surface interest, and \u003ca href=\"\/products\/tropical-fish-uk\"\u003eThree-Lined Pencilfish - Nannostomus Trifasciatus\u003c\/a\u003e for a refined top-level companion. In larger displays, a carefully planned group with \u003ca href=\"\/products\/tropical-fish-uk\"\u003eSailfin Tetra - Crenuchus Spilurus -\u003c\/a\u003e can work if the layout includes enough calm areas.\u003c\/p\u003e\n\u003ch3\u003eSpecies to Avoid\u003c\/h3\u003e\n\u003cp\u003eAvoid aggressive or boisterous fish, especially fin nippers and very large characins. The \u003ca href=\"\/products\/tropical-fish-uk\"\u003eBucktooth Tetra - Exodon Paradoxus -\u003c\/a\u003e is a clear no for this type of community. Likewise, large species such as 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 are unsuitable because of size and feeding differences. The predatory \u003ca href=\"\/products\/tropical-fish-uk\"\u003eGar Characins - Ctenolucius Hujeta\u003c\/a\u003e also belongs in a different setup entirely.\u003c\/p\u003e\n\u003ch3\u003eCommunity Stocking Examples\u003c\/h3\u003e\n\u003cp\u003eIn an 80 litre tank, keep 8-10 royal tetras as the main shoal with a small bottom group such as Corydoras. In a 120 litre aquarium, you can keep 10-12 royal tetras with pencilfish and one additional peaceful tetra species. If you are asking \u003cstrong\u003eroyal tetras with other fish\u003c\/strong\u003e, the answer is yes, but avoid overcrowding the middle water column.\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\"\u003eThree-Lined Pencilfish - Nannostomus Trifasciatus\u003c\/a\u003e\u003c\/td\u003e\n      \u003ctd\u003e✅ Yes\u003c\/td\u003e\n      \u003ctd\u003ePeaceful, occupies upper levels, similar water needs\u003c\/td\u003e\n    \u003c\/tr\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\u003eActive shoaler, good contrast in a larger community\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003ca href=\"\/products\/tropical-fish-uk\"\u003eBucktooth Tetra - Exodon Paradoxus -\u003c\/a\u003e\u003c\/td\u003e\n      \u003ctd\u003e❌ Avoid\u003c\/td\u003e\n      \u003ctd\u003eFin-nipping, predatory behaviour, unsuitable temperament\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eThey are usually safe with snails and larger shrimp, though very small shrimp fry may be eaten. This is normal opportunistic tetra behaviour. If you are comparing them with the \u003cstrong\u003epurple emperor tetra\u003c\/strong\u003e, note that royal tetras are generally chosen for a softer, more understated community look. Searches like \u003cstrong\u003enematobrycon palmeri vs inpaichthys kerri\u003c\/strong\u003e are common because hobbyists want to know which “royal” fish to choose; in practice, \u003cem\u003eInpaichthys kerri\u003c\/em\u003e is ideal when you want a peaceful blue-toned shoal without the more distinctive emperor-tetra body line.\u003c\/p\u003e\n\u003cp\u003eFor buyers looking for the \u003cstrong\u003ebest place to buy tropical fish online UK\u003c\/strong\u003e, compatibility advice matters as much as the fish themselves. A well-matched community gives better long-term results than buying species simply because they look attractive in isolation.\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 settled community. Even peaceful fish can introduce parasites or bacterial issues that stress an established shoal.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2 id=\"breeding\"\u003eHow to Breed Royal Tetras: Complete Breeding Guide\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eRoyal tetras breeding\u003c\/strong\u003e is achievable at home, though it is usually classed as moderate rather than beginner-easy. The first step is learning \u003cstrong\u003eroyal tetras male vs female\u003c\/strong\u003e differences. Mature males tend to be slimmer and more colourful, while females are fuller-bodied. Good conditioning with varied food is essential before attempting spawning.\u003c\/p\u003e\n\u003ch3\u003eBreeding Setup\u003c\/h3\u003e\n\u003cp\u003eUse a separate 20-40 litre breeding tank with soft, slightly acidic water, low light, and fine-leaved plants or spawning mops. A temperature around 25-27°C works well. Although hobby searches may include \u003cstrong\u003enematobrycon palmeri breeding\u003c\/strong\u003e, \u003cstrong\u003eparacheirodon simulans breeding\u003c\/strong\u003e, or \u003cstrong\u003eparacheirodon simulans reproduction\u003c\/strong\u003e, the broad tetra principle is similar: soft water, subdued light, and conditioned pairs or groups produce the best results.\u003c\/p\u003e\n\u003ch3\u003eSpawning Behaviour\u003c\/h3\u003e\n\u003cp\u003eWell-conditioned fish may spawn at first light. The pair will scatter adhesive eggs among plants or mops. Adults should be removed after spawning because they may eat eggs. If you are reading broad tetra guides such as \u003cstrong\u003eparacheirodon simulans how to\u003c\/strong\u003e, remember that egg protection is one of the biggest success factors across many small characins.\u003c\/p\u003e\n\u003ch3\u003eEgg Care and Fry Growth\u003c\/h3\u003e\n\u003cp\u003eEggs usually hatch within about 24-36 hours depending on temperature. Fry become free-swimming a few days later and need infusoria or liquid fry food first, followed by newly hatched brine shrimp. Clean water and gentle aeration are vital. This is where many attempts fail: not because the adults will not spawn, but because the fry are tiny and sensitive.\u003c\/p\u003e\n\u003cp\u003eHealthy adults kept in ideal conditions may breed more than once. Strong conditioning also supports better female recovery between spawns. If you are researching \u003cstrong\u003eroyal tetras for sale UK\u003c\/strong\u003e, \u003cstrong\u003eroyal tetras online UK\u003c\/strong\u003e, or \u003cstrong\u003eorder royal tetras UK\u003c\/strong\u003e with breeding in mind, buy a decent group so you can observe natural pairing and select the strongest fish.\u003c\/p\u003e\n\u003cdiv class=\"tip-box\"\u003e\n  \u003ch4\u003eAdvanced Breeding Tip\u003c\/h4\u003e\n  \u003cp\u003eUse a dimly lit breeding tank with a mesh or marbles over the base so eggs fall out of reach. This simple change dramatically improves survival because royal tetras, like many egg scatterers, will readily consume their own spawn.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2 id=\"comparison\"\u003eRoyal Tetras vs Similar Species: Which Should You Choose?\u003c\/h2\u003e\n\u003cp\u003eComparison matters because many aquarists search overlapping names and end up choosing between different fish with similar common labels. The most frequent questions include \u003cstrong\u003eroyal tetras vs neon tetra\u003c\/strong\u003e, \u003cstrong\u003eroyal tetras vs cardinal tetra\u003c\/strong\u003e, and whether a blue tetra type is better than a classic striped shoaler. Royal tetras are the choice for aquarists who want a calmer, more understated metallic fish rather than a bright red-blue stripe.\u003c\/p\u003e\n\u003ctable class=\"comparison-table\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eRoyal Tetra\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\u003e4-5 cm\u003c\/td\u003e\n\u003ctd\u003e3.5-4 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCare Level\u003c\/td\u003e\n\u003ctd\u003eEasy\u003c\/td\u003e\n\u003ctd\u003eEasy to moderate\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTemperature\u003c\/td\u003e\n\u003ctd\u003e23-27°C\u003c\/td\u003e\n\u003ctd\u003e22-26°C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePrice\u003c\/td\u003e\n\u003ctd\u003e£19.35\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\u003eSubtle planted communities\u003c\/td\u003e\n\u003ctd\u003eBright shoaling 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\u003eRoyal Tetra\u003c\/th\u003e\n\u003cth\u003eCardinal Tetra\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eColour Style\u003c\/td\u003e\n\u003ctd\u003eBlue-violet metallic body\u003c\/td\u003e\n\u003ctd\u003eBold red-blue stripe\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eWater Preference\u003c\/td\u003e\n\u003ctd\u003eSoft to moderate\u003c\/td\u003e\n\u003ctd\u003eOften prefers softer, warmer water\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBehaviour\u003c\/td\u003e\n\u003ctd\u003ePeaceful shoaler\u003c\/td\u003e\n\u003ctd\u003ePeaceful shoaler\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eVisual Impact\u003c\/td\u003e\n\u003ctd\u003eElegant and muted\u003c\/td\u003e\n\u003ctd\u003eHigh contrast and vivid\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBest For\u003c\/td\u003e\n\u003ctd\u003eNaturalistic aquascapes\u003c\/td\u003e\n\u003ctd\u003eClassic Amazon-style schools\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eIf you are comparing royal tetras with the \u003cstrong\u003esuper blue kerri tetra\u003c\/strong\u003e label, you are often looking at the same fish sold under slightly different trade descriptions. If you want a fish with a more unusual silhouette, look at \u003ca href=\"\/products\/tropical-fish-uk\"\u003eSailfin Tetra - Crenuchus Spilurus -\u003c\/a\u003e. If you want a more surface-oriented South American companion, \u003ca href=\"\/products\/tropical-fish-uk\"\u003eSplash Tetra - Copella Arnoldi\u003c\/a\u003e is worth considering. If you want a refined, calm shoal with a blue sheen and easy community manners, royal tetras are usually the better pick.\u003c\/p\u003e\n\n\u003ch2 id=\"health\"\u003eCommon Health Problems in Royal Tetras \u0026amp; How to Prevent Them\u003c\/h2\u003e\n\u003cp\u003eGood \u003cstrong\u003eroyal tetras health\u003c\/strong\u003e starts with stable water, a mature filter, and a varied diet. Healthy fish show clear eyes, strong colour, open fins, coordinated shoaling, and a quick feeding response. Most \u003cstrong\u003eroyal tetras diseases\u003c\/strong\u003e seen in home aquariums are not species-specific but stress-related: ich, fin damage, bacterial infections, wasting from internal parasites, and losses caused by poor acclimation.\u003c\/p\u003e\n\u003ch3\u003eCommon Symptoms\u003c\/h3\u003e\n\u003cp\u003eWatch for clamped fins, faded colour, flashing, isolation from the shoal, white spots, rapid breathing, or hollow bellies. Some search phrases such as \u003cstrong\u003eparacheirodon simulans symptoms\u003c\/strong\u003e, \u003cstrong\u003eparacheirodon simulans infections\u003c\/strong\u003e, and \u003cstrong\u003eparacheirodon simulans treatment\u003c\/strong\u003e are aimed at another tetra species, but the warning signs are broadly similar across small characins. Early action matters more than exact wording in a search box.\u003c\/p\u003e\n\u003ch3\u003eTreatment and Prevention\u003c\/h3\u003e\n\u003cp\u003eStart with water testing and a large partial water change. Check temperature, ammonia, nitrite, and nitrate before medicating. Many minor issues improve once water quality is corrected. Quarantine is essential for new fish and for any fish showing symptoms. In mixed communities with shrimp or snails, be careful with medication choice. Also note that obscure terms like \u003cstrong\u003eparacheirodon simulans uti treatment\u003c\/strong\u003e are not standard aquarium diagnoses; focus on symptoms, water quality, and appropriate fish medications instead.\u003c\/p\u003e\n\u003cdiv class=\"warning-box\"\u003e\n  \u003ch4\u003e⚠️ Medication Warning\u003c\/h4\u003e\n  \u003cp\u003eNEVER use copper-based medications in tanks containing shrimp or other sensitive invertebrates. Copper can be lethal even at low doses. Always read the label and move fish to a treatment tank if needed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"info-box\"\u003e\n  \u003ch4\u003e🔹 Quarantine Protocol\u003c\/h4\u003e\n  \u003cul\u003e\n    \u003cli\u003eUse a separate bare-bottom tank for 2-4 weeks\u003c\/li\u003e\n    \u003cli\u003eProvide gentle filtration and stable heat\u003c\/li\u003e\n    \u003cli\u003eObserve for white spot, fin issues, weight loss, or abnormal swimming\u003c\/li\u003e\n    \u003cli\u003eFeed lightly and maintain excellent water quality\u003c\/li\u003e\n    \u003cli\u003eOnly move fish after they are feeding and symptom-free\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003eAs with many tetras, prevention is easier than cure. Avoid sudden temperature swings, overcrowding, and rough transport. If you are searching for \u003cstrong\u003elive fish for sale UK\u003c\/strong\u003e or \u003cstrong\u003ebuy live fish online UK\u003c\/strong\u003e, choose a seller that packs properly, acclimates fish well, and gives realistic care advice rather than vague promises.\u003c\/p\u003e\n\n\u003ch2 id=\"behavior\"\u003eUnderstanding Royal Tetra Behavior in the Aquarium\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eRoyal tetras behaviour\u003c\/strong\u003e is one of their best features. They are active but not frantic, peaceful but not dull, and social without being pushy. They spend most of their time in the middle of the tank, loosely shoaling and weaving through open water before retreating into plants. In a small group they can seem shy; in a larger group they become much bolder and more visually impressive.\u003c\/p\u003e\n\u003cp\u003eThis species is best described as a shoaling tetra rather than a tightly packed schooling fish. You will often see them spread out while feeding, then regroup when startled. Males may display to one another with posture and colour, but serious aggression is uncommon in a properly sized tank. This makes them excellent \u003cstrong\u003eroyal tetras with other fish\u003c\/strong\u003e community residents.\u003c\/p\u003e\n\u003cp\u003eTo encourage natural behaviour, keep them in a group of at least 8, provide side and rear planting, and leave a clear central lane for swimming. In our experience, fish kept this way settle faster, feed more confidently, and show stronger metallic colour than fish kept in sparse décor.\u003c\/p\u003e\n\n\u003ch2 id=\"why-buy\"\u003eWhy Buy from Tropical Fish Co?\u003c\/h2\u003e\n\u003cp\u003eWhen people search \u003cstrong\u003etropical fish for sale\u003c\/strong\u003e, \u003cstrong\u003efreshwater aquarium fish for sale near me\u003c\/strong\u003e, \u003cstrong\u003efreshwater tropical fish for sale near me\u003c\/strong\u003e, or even \u003cstrong\u003eaquarium fish for sale near me open now\u003c\/strong\u003e, what they really want is healthy stock, accurate identification, and fish that arrive in good condition. That matters even more with shoaling species like royal tetras, because stressed or poorly packed fish lose colour quickly and take longer to settle.\u003c\/p\u003e\n\u003cp\u003eOur royal tetras are selected for active swimming, clean finnage, and good group consistency so you receive a shoal that looks cohesive in the aquarium. Before dispatch, fish are observed for feeding response and general condition, and weak individuals are not included in a sale batch. This is especially important for customers searching \u003cstrong\u003eroyal tetras shop UK\u003c\/strong\u003e, \u003cstrong\u003ewhere to buy royal tetras UK\u003c\/strong\u003e, \u003cstrong\u003eroyal tetras delivery UK\u003c\/strong\u003e, or \u003cstrong\u003eroyal tetras price UK\u003c\/strong\u003e who want value without sacrificing fish welfare.\u003c\/p\u003e\n\u003cp\u003eFor delivery, fish are packed in insulated boxes with professional bagging methods designed to keep temperature stable in transit. Heat packs are used in cold weather when conditions require them. Tracked delivery helps reduce time in the box, and careful packing is one reason customers looking to \u003cstrong\u003ebuy tropical fish online UK\u003c\/strong\u003e, \u003cstrong\u003ebuy live fish online UK free delivery\u003c\/strong\u003e, or \u003cstrong\u003etropical fish delivered UK\u003c\/strong\u003e choose specialist aquatic retailers over random listings such as \u003cstrong\u003eaquarium fish for sale by owner\u003c\/strong\u003e or \u003cstrong\u003egumtree tropical fish for sale near me\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIf you are comparing \u003cstrong\u003echeapest tropical fish\u003c\/strong\u003e with properly conditioned stock, remember that the lowest upfront price is not always the best value. Healthy fish settle faster, feed sooner, and are less likely to suffer stress-related losses. For buyers wondering about \u003cstrong\u003eaquarium and fish for sale near me\u003c\/strong\u003e, \u003cstrong\u003eaquarium fish for sale near me\u003c\/strong\u003e, or \u003cstrong\u003ecould tropical fish for sale near me now\u003c\/strong\u003e, ordering from a specialist source gives you consistent species selection and care information matched to the fish you are buying.\u003c\/p\u003e\n\u003cdiv class=\"care-highlight\"\u003e\n  \u003ch4\u003eWhy Choose Tropical Fish Co for Royal Tetras\u003c\/h4\u003e\n  \u003cul\u003e\n    \u003cli\u003eRoyal tetras selected as active shoals, not mixed leftover singles\u003c\/li\u003e\n    \u003cli\u003eFish observed for feeding response and visible condition before dispatch\u003c\/li\u003e\n    \u003cli\u003eInsulated, tracked UK delivery with seasonal heat protection when needed\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eYou Might Also Like\u003c\/h2\u003e\n\u003cp\u003eTo build a balanced South American display, pair your royal tetras with other peaceful species that use different levels of the tank. \u003ca href=\"\/products\/tropical-fish-uk\"\u003eThree-Lined Pencilfish - Nannostomus Trifasciatus\u003c\/a\u003e adds elegant surface movement, while \u003ca href=\"\/products\/tropical-fish-uk\"\u003eSplash Tetra - Copella Arnoldi\u003c\/a\u003e brings unusual top-level behaviour. For a contrasting shoal, \u003ca href=\"\/products\/tropical-fish-uk\"\u003eGlass Bloodfin Tetras - Prionobrama\u003c\/a\u003e offers a brighter, more transparent look. If you want a more unusual tetra profile, consider \u003ca href=\"\/products\/tropical-fish-uk\"\u003eSailfin Tetra - Crenuchus Spilurus -\u003c\/a\u003e. Avoid mixing them with aggressive species such as \u003ca href=\"\/products\/tropical-fish-uk\"\u003eBucktooth Tetra - Exodon Paradoxus -\u003c\/a\u003e or oversized fish like the \u003ca href=\"\/products\/tropical-fish-uk\"\u003eRed-Bellied Pacu\u003c\/a\u003e. For customers exploring \u003cstrong\u003eroyal tetras for sale UK\u003c\/strong\u003e and planning a full community, these related species help create a layered, natural aquarium rather than a random mix.\u003c\/p\u003e","brand":"Tropical Fish Co","offers":[{"title":"2 cm","offer_id":57469567500623,"sku":"2270","price":2.6,"currency_code":"GBP","in_stock":false},{"title":"\u003e 3cm","offer_id":57470137696591,"sku":"2275","price":4.34,"currency_code":"GBP","in_stock":true},{"title":"1,5-2 cm","offer_id":57470137729359,"sku":"2337","price":2.6,"currency_code":"GBP","in_stock":true},{"title":"2,5 - 3 cm","offer_id":57470137762127,"sku":"2338","price":4.34,"currency_code":"GBP","in_stock":true},{"title":"3 - 4 cm","offer_id":57470137794895,"sku":"2331","price":4.34,"currency_code":"GBP","in_stock":true},{"title":"\u003e 4 cm","offer_id":57470137827663,"sku":"2332","price":4.34,"currency_code":"GBP","in_stock":true},{"title":"2.5-3 cm","offer_id":57560850760015,"sku":"2271","price":2.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/1408\/6735\/files\/royal-tetras-hero-driftwood-2270.webp?v=1776719436","url":"https:\/\/tropical-fish-co.myshopify.com\/products\/paracheirodon-simulans-nematobrycon-palmeri-royal-tetra-uk","provider":"Tropical Fish Co","version":"1.0","type":"link"}