{"product_id":"freshwater-tropical-fish-uk-tetras-for-sale-black-neon-tetra","title":"Black Neon Tetra (Hyphessobrycon herbertaxelrodi) - UK","description":"\u003cp\u003e\u003cstrong\u003eBlack Neon Tetra\u003c\/strong\u003e is one of the most elegant \u003cstrong\u003efreshwater tropical fish UK\u003c\/strong\u003e hobbyists can add to a peaceful display. Known scientifically as \u003cem\u003eHyphessobrycon herbertaxelrodi\u003c\/em\u003e, this South American tetra combines a deep charcoal body with a glowing iridescent stripe that looks electric under the right light. It is a classic choice for anyone searching for \u003cstrong\u003etetras for sale UK\u003c\/strong\u003e, \u003cstrong\u003eschooling fish UK\u003c\/strong\u003e, or \u003cstrong\u003ecommunity tank fish UK\u003c\/strong\u003e that stay small, active, and easy to care for. Adults reach around \u003cstrong\u003e4 cm\u003c\/strong\u003e, live for up to \u003cstrong\u003e5 years\u003c\/strong\u003e, and thrive in a gentle, planted aquarium with stable water quality. Their calm temperament makes them a \u003cstrong\u003epeaceful community fish\u003c\/strong\u003e and one of the \u003cstrong\u003ebest tetras for community tank\u003c\/strong\u003e setups, especially in a group of eight or more. If you are planning a \u003cstrong\u003eblack neon tetra care guide\u003c\/strong\u003e, this species is a superb fit for beginners and experienced keepers alike. See our detailed photos showing the contrast between the dark lateral stripe and the bright reflective band, which is why this fish is such a standout in a \u003cstrong\u003ecolourful schooling fish UK\u003c\/strong\u003e collection.\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\u003eHyphessobrycon herbertaxelrodi\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 40 litres (10.5 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 5 years\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTemperament:\u003c\/strong\u003e Peaceful, schooling\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDiet:\u003c\/strong\u003e Omnivore; flakes, micro pellets, frozen and live foods\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\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eGenus:\u003c\/strong\u003e Hyphessobrycon\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003eThe Black Neon Tetra belongs to the same broad family as many popular South American tetras UK aquarists love for planted aquariums and community tanks. Although it is often compared with the Neon Tetra, it is a distinct species with a darker, more understated look that suits natural aquascapes. In the aquarium hobby, it is valued for its hardiness, tight schooling behaviour, and ability to add movement without overwhelming smaller tanks.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2 id=\"origin\"\u003eWhere Do Black Neon Tetras Come From? Natural Habitat Explained\u003c\/h2\u003e\n\u003cp\u003eIn the wild, \u003cem\u003eHyphessobrycon herbertaxelrodi\u003c\/em\u003e comes from slow-moving waters in the Paraguay River basin in Brazil, where it lives among leaf litter, submerged roots, and soft vegetation. This is a classic blackwater and clearwater environment with gentle current, dim light, and naturally soft, slightly acidic water. That habitat explains why this species does best in a \u003cstrong\u003eplanted tank setup\u003c\/strong\u003e with calm flow, driftwood, and shaded areas rather than a bright, bare display. Wild Black Neon Tetras feed on tiny insects, microcrustaceans, and plant matter, which is why a varied diet in captivity works so well.\u003c\/p\u003e\n\u003cp\u003eFor keepers researching \u003cstrong\u003efreshwater tropical fish UK\u003c\/strong\u003e options, this species is especially appealing because it adapts well to stable aquarium conditions while still rewarding you with natural schooling behaviour. The species is not known to be threatened in the trade, but responsible sourcing still matters. A well-planned \u003cstrong\u003eneon tank setup\u003c\/strong\u003e that mimics its native habitat helps reduce stress, improve colour, and encourage confident swimming. If you are comparing \u003cstrong\u003eaquarium fish for sale freshwater\u003c\/strong\u003e species, this tetra is one of the easiest ways to create a calm, natural-looking South American biotope or community display.\u003c\/p\u003e\n\u003cdiv class=\"tip-box\"\u003e\n  \u003ch4\u003e💡 Expert Tip\u003c\/h4\u003e\n  \u003cp\u003eMimicking the natural habitat improves health and brings out natural behaviour. Use dark substrate, live plants, floating cover, and subdued lighting to make your Black Neon Tetras feel secure and display stronger contrast.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2 id=\"tank-setup\"\u003eHow Do You Set Up the Perfect Tank for Black Neon Tetras?\u003c\/h2\u003e\n\u003ch3\u003eTank Size Requirements\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eblack neon tetra tank size\u003c\/strong\u003e minimum is 40 litres, but a 60 litre aquarium or larger is much better for a proper shoal. These fish are small, yet they are active \u003cstrong\u003eschooling fish\u003c\/strong\u003e that need room to move as a group. If you are asking \u003cstrong\u003ewhat size fish should i get\u003c\/strong\u003e for a new community tank, this species is a sensible choice because its bioload stays low while its visual impact is high. A group of eight to ten is ideal, and the \u003cstrong\u003eminimum group size\u003c\/strong\u003e should never be treated as optional.\u003c\/p\u003e\n\u003ch3\u003eWater Parameters\u003c\/h3\u003e\n\u003cp\u003eFor reliable long-term health, aim for a \u003cstrong\u003ewater temperature range\u003c\/strong\u003e of 23-27°C, with a sweet spot around 24-25°C. The \u003cstrong\u003epH requirements\u003c\/strong\u003e are broad enough for many UK homes, but slightly acidic to neutral water is best, ideally 6.0-7.0. General hardness can sit between 3 and 15 dGH, though softer water often improves colour and spawning behaviour. Stable \u003cstrong\u003ewater parameters\u003c\/strong\u003e matter more than chasing exact numbers, so avoid sudden swings.\u003c\/p\u003e\n\u003cp\u003eIf you are searching for a \u003cstrong\u003eblack neon tetra tank setup\u003c\/strong\u003e or \u003cstrong\u003eblack neon tetra water parameters\u003c\/strong\u003e, think calm, clean, and planted. These fish are not ideal for hot, turbulent, or highly alkaline systems. They are also a great fit if you want \u003cstrong\u003etropical fish requirements\u003c\/strong\u003e that are straightforward for beginners.\u003c\/p\u003e\n\u003ch3\u003eFiltration and Water Flow\u003c\/h3\u003e\n\u003cp\u003eA gentle sponge filter, internal filter, or small canister with an adjustable outlet works well. The species prefers low to moderate \u003cstrong\u003ewater flow preference\u003c\/strong\u003e, so avoid blasting the shoal with strong current. Good oxygenation is important, but the fish should be able to hold position without fighting the flow. For a natural look, place the outflow along the back glass or diffuse it through plants and hardscape.\u003c\/p\u003e\n\u003ch3\u003eSubstrate, Plants, and Decor\u003c\/h3\u003e\n\u003cp\u003eDark sand or fine gravel helps the fish feel secure and makes the iridescent stripe stand out. A \u003cstrong\u003eplanted aquarium\u003c\/strong\u003e is strongly recommended, especially if you want the best colour and behaviour. Use species such as Java fern, Anubias, Cryptocoryne, Amazon sword, and floating plants to create shade. If you enjoy aquascaping, this is one of the easiest \u003cstrong\u003ecolourful freshwater fish UK\u003c\/strong\u003e options to showcase against wood, roots, and dense greenery. You can also pair the setup with our \u003ca href=\"\/products\/freshwater-tropical-fish-uk\"\u003efreshwater tropical fish collection\u003c\/a\u003e, a quality \u003ca href=\"\/products\/freshwater-tropical-fish-uk\"\u003eaquarium heater\u003c\/a\u003e, and a reliable \u003ca href=\"\/products\/freshwater-tropical-fish-uk\"\u003esponge filter for small community tanks\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eLighting Requirements\u003c\/h3\u003e\n\u003cp\u003eModerate lighting is ideal. Too much light can make the fish skittish, while soft lighting with floating cover encourages natural schooling behaviour. If you are researching \u003cstrong\u003elighting requirements\u003c\/strong\u003e for a \u003cstrong\u003eblack neon tetra planted tank setup\u003c\/strong\u003e, use a 6-8 hour photoperiod and let plants do the visual work. A dark substrate and shaded zones will make the white-green stripe appear brighter.\u003c\/p\u003e\n\u003cdiv class=\"info-box\"\u003e\n  \u003ch4\u003e🔹 Quick Setup Checklist\u003c\/h4\u003e\n  \u003cul\u003e\n    \u003cli\u003e40 litres minimum, 60 litres preferred\u003c\/li\u003e\n    \u003cli\u003eHeater set to 24-25°C\u003c\/li\u003e\n    \u003cli\u003eGentle filtration with low current\u003c\/li\u003e\n    \u003cli\u003eDark substrate and driftwood\u003c\/li\u003e\n    \u003cli\u003eLive plants and floating cover\u003c\/li\u003e\n    \u003cli\u003eStable pH between 6.0 and 7.0\u003c\/li\u003e\n    \u003cli\u003eFully cycled tank before stocking\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 tank for 4-6 weeks before adding fish. A mature filter and stable bacteria colony are the easiest way to prevent ammonia spikes, protect gill health, and keep a shoal of Black Neon Tetras active and colourful.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2 id=\"feeding\"\u003eWhat Do Black Neon Tetras Eat? Complete Feeding Guide\u003c\/h2\u003e\n\u003cp\u003eThis species is an omnivore, so the best results come from variety. In nature, it picks at tiny invertebrates, algae films, and organic debris. In captivity, the best \u003cstrong\u003eblack neon tetra diet\u003c\/strong\u003e includes high-quality flakes or micro pellets as a staple, then frozen and live foods for enrichment. If you are reading a \u003cstrong\u003efeeding guide\u003c\/strong\u003e for \u003cstrong\u003efreshwater tropical fish UK\u003c\/strong\u003e keepers, this is a simple fish to feed well without overcomplicating things.\u003c\/p\u003e\n\u003cp\u003eFor daily feeding, use a small pinch of crushed flakes or micro pellets once or twice per day. Add frozen daphnia, baby brine shrimp, bloodworm, or cyclops several times a week. These foods improve condition, support breeding, and help maintain vivid colour. If you are asking \u003cstrong\u003ewhat fish are best for tropical tank\u003c\/strong\u003e setups where feeding must be easy, Black Neon Tetras are a strong answer because they accept most quality community fish foods.\u003c\/p\u003e\n\u003cp\u003eA common customer success story is a 60 litre planted tank where a shoal of ten Black Neon Tetras became noticeably bolder after switching from generic flakes to a rotation of micro pellets and frozen foods. Within a few weeks, the fish were schooling tighter and showing stronger contrast. That is a good example of how the right nutrition supports both health and appearance.\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 pellets or crushed flakes\u003c\/td\u003e\n\u003ctd\u003eSmall pinch, fully eaten in 1-2 minutes\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\u003eSmall portion, once the fish are active\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eFoods to avoid include oversized pellets, fatty human foods, and anything that clouds the water quickly. If you are treating tropical fish with salt, remember that salt is not a routine food additive; it should only be used for specific medical reasons and with species-appropriate advice. For a balanced diet, pair a staple food with a quality frozen option such as \u003ca href=\"\/products\/freshwater-tropical-fish-uk\"\u003emicro pellets for tropical fish\u003c\/a\u003e and \u003ca href=\"\/products\/freshwater-tropical-fish-uk\"\u003efrozen daphnia for small fish\u003c\/a\u003e.\u003c\/p\u003e\n\u003cdiv class=\"warning-box\"\u003e\n  \u003ch4\u003e⚠️ Overfeeding Warning\u003c\/h4\u003e\n  \u003cp\u003eOverfeeding causes ammonia spikes, dull water, and digestive stress. Feed only what the shoal can finish quickly, and remove uneaten food if it settles on the substrate.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2 id=\"appearance\"\u003eWhat Do Black Neon Tetras Look Like? Colors, Patterns \u0026amp; Varieties\u003c\/h2\u003e\n\u003cp\u003eThe Black Neon Tetra reaches around 4 cm, with a slim, torpedo-shaped body and transparent fins that support quick, coordinated movement. Its signature look is a bold black lateral stripe running from the eye to the tail, topped by a bright white to greenish iridescent band. Under soft aquarium lighting, this contrast is dramatic, which is why many aquarists describe it as a \u003cstrong\u003ecolourful Black Neon Tetra for aquarium\u003c\/strong\u003e even though the fish is not neon-bright in the usual sense. The body often appears bronze or smoky brown depending on lighting and substrate.\u003c\/p\u003e\n\u003cp\u003eSexual dimorphism is subtle. Females are usually a little rounder through the belly, especially when mature, while males are slimmer and may show slightly stronger colour. If you are comparing \u003cstrong\u003emale vs female\u003c\/strong\u003e fish, look at body shape more than fin shape. There are no major colour morphs in the hobby, but the fish can appear very different depending on tank design, making it a favourite for photographers and aquascapers. Our photos show how the intense chocolate brown coloration achieved through dark substrate and floating plants can make the stripe appear almost metallic.\u003c\/p\u003e\n\n\u003ch2 id=\"compatibility\"\u003eWhat Fish Can Live With Black Neon Tetras? Compatibility Guide\u003c\/h2\u003e\n\u003cp\u003eBlack Neon Tetras are among the \u003cstrong\u003ebest Black Neon Tetra for community tank\u003c\/strong\u003e setups because they are calm, midwater swimmers that rarely bother other species. They are a strong choice for anyone wanting \u003cstrong\u003ecommunity tank fish UK\u003c\/strong\u003e that work in planted aquariums, mixed schools, and peaceful displays. Their best tank mates are other small, non-aggressive fish that enjoy similar temperatures and water chemistry.\u003c\/p\u003e\n\u003cp\u003eIdeal companions include Corydoras, rasboras, other small tetras, dwarf cichlids, pencilfish, and peaceful livebearers in the right water conditions. They also work well with invertebrates when the tank is mature and heavily planted, so \u003cstrong\u003eBlack Neon Tetra with shrimp\u003c\/strong\u003e is possible, especially with adult Neocaridina and plenty of moss. Avoid large aggressive fish, fin-nippers, and species that may mistake them for food.\u003c\/p\u003e\n\u003ctable class=\"comparison-table\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n\u003cth\u003eSpecies\u003c\/th\u003e\n\u003cth\u003eCompatible?\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/freshwater-tropical-fish-uk\"\u003eCorydoras\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e✅ Yes\u003c\/td\u003e\n\u003ctd\u003ePeaceful bottom dwellers that share similar water conditions.\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/freshwater-tropical-fish-uk\"\u003eRasboras\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e✅ Yes\u003c\/td\u003e\n\u003ctd\u003eGreat midwater companions for a calm community tank.\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/freshwater-tropical-fish-uk\"\u003eNeon Blue Tetra\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e✅ Yes\u003c\/td\u003e\n\u003ctd\u003eSimilar size and temperament; keep in a proper shoal.\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/freshwater-tropical-fish-uk\"\u003eCobalt Dwarf Gourami\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e⚠️ Caution\u003c\/td\u003e\n\u003ctd\u003eUsually fine in larger planted tanks, but monitor for stress.\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eLarge aggressive cichlids\u003c\/td\u003e\n\u003ctd\u003e❌ Avoid\u003c\/td\u003e\n\u003ctd\u003eMay harass or eat small tetras.\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eFor stocking ideas, a 60 litre tank might hold ten Black Neon Tetras with a group of pygmy Corydoras and a few snails. In a larger aquascape, you can build a mixed \u003cstrong\u003eschooling fish UK\u003c\/strong\u003e display with pencilfish and small rasboras. If you are comparing \u003cstrong\u003eBlack Neon Tetra vs neon tetra\u003c\/strong\u003e, the Black Neon is usually the better choice for a darker, more natural look. If you are deciding between \u003cstrong\u003eBlack Neon Tetra vs cardinal tetra\u003c\/strong\u003e, choose the cardinal for stronger red-blue colour and the Black Neon for contrast and hardiness. Against \u003cstrong\u003eBlack Neon Tetra vs guppy\u003c\/strong\u003e, the tetra is better for a planted, softer-water setup. Versus \u003cstrong\u003eBlack Neon Tetra vs ember tetra\u003c\/strong\u003e, this species offers a more dramatic stripe pattern, while ember tetras bring warmer orange tones. If you want a fish that works in a calm mixed display, this is one of the \u003cstrong\u003ebest tetras for community tank\u003c\/strong\u003e aquariums.\u003c\/p\u003e\n\u003cdiv class=\"tip-box\"\u003e\n  \u003ch4\u003e💡 Always Quarantine New Arrivals\u003c\/h4\u003e\n  \u003cp\u003eQuarantine new fish for 2-4 weeks in a separate tank before adding them to your main aquarium. This reduces the risk of parasites, bacterial infections, and stress-related losses in your established shoal.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2 id=\"breeding\"\u003eHow Do You Breed Black Neon Tetras? Complete Breeding Guide\u003c\/h2\u003e\n\u003cp\u003eBreeding difficulty is moderate, but it is very achievable in a quiet, soft-water setup. If you are researching \u003cstrong\u003eblack neon tetra breeding\u003c\/strong\u003e, start with a conditioned group and separate the best pair or small group into a spawning tank. A shallow tank with fine-leaved plants, spawning mops, or mesh at the bottom works well. The water should be soft, slightly acidic, and kept around 24-26°C. Dim lighting often helps trigger spawning behaviour.\u003c\/p\u003e\n\u003cp\u003eFor \u003cstrong\u003eblack neon tetra breeding guide\u003c\/strong\u003e success, feed the adults live or frozen foods for one to two weeks before spawning. Females become fuller-bodied, and males become more active as they court. Eggs are scattered among plants and are usually eaten by the adults, so remove the parents after spawning. Eggs typically hatch in about 24-36 hours, and fry become free-swimming a few days later. Start with infusoria or liquid fry food, then move to newly hatched brine shrimp and powdered fry feeds.\u003c\/p\u003e\n\u003cp\u003eCommon challenges include fungus on eggs, poor fertility, and fry losses from dirty water. Gentle aeration, daily small water changes, and stable temperature make a big difference. If you are looking at \u003cstrong\u003ebreeding pairs of tropical fish for sale\u003c\/strong\u003e or planning a dedicated spawn project, this species rewards patience. It is also a good candidate for aquarists interested in \u003cstrong\u003enano fish UK\u003c\/strong\u003e breeding projects because the fry can be raised in a compact system.\u003c\/p\u003e\n\u003cdiv class=\"tip-box\"\u003e\n  \u003ch4\u003eAdvanced Breeding Tip\u003c\/h4\u003e\n  \u003cp\u003eUse a bare-bottom spawning tank with a thin layer of marbles or mesh over the base. This prevents adults from reaching the eggs and makes it easier to keep the water pristine during the first critical days.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2 id=\"comparison\"\u003eBlack Neon Tetra vs Similar Species: Which Should You Choose?\u003c\/h2\u003e\n\u003cp\u003eComparing species helps you choose the right fish for your tank style, water chemistry, and colour preference. If you want a subtle but striking fish for a planted aquarium, Black Neon Tetras are often better than brighter species because they create contrast rather than overpowering the aquascape.\u003c\/p\u003e\n\u003ctable class=\"comparison-table\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eBlack Neon 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 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\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£14.52\u003c\/td\u003e\n\u003ctd\u003eVaries by size\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBest For\u003c\/td\u003e\n\u003ctd\u003ePlanted community tanks\u003c\/td\u003e\n\u003ctd\u003eBright mixed displays\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eIf you want a darker, more refined look, choose the Black Neon Tetra. If you want a classic glowing blue-red fish, the Neon Tetra may suit you better. For aquarists comparing \u003cstrong\u003eBlack Neon Tetra vs rasbora\u003c\/strong\u003e, the tetra is usually the better choice for a soft-water South American style tank. For \u003cstrong\u003eBlack Neon Tetra vs danio\u003c\/strong\u003e, choose the tetra if you want a calmer fish that prefers warmer water and a more planted layout. You can also pair them with \u003ca href=\"\/products\/freshwater-tropical-fish-uk\"\u003ePenguin Tetra\u003c\/a\u003e or \u003ca href=\"\/products\/freshwater-tropical-fish-uk\"\u003eRed-Blue Columbian Tetra\u003c\/a\u003e if you want a larger mixed school effect.\u003c\/p\u003e\n\n\u003ch2 id=\"health\"\u003eWhat Are the Common Health Problems in Black Neon Tetras?\u003c\/h2\u003e\n\u003cp\u003eHealthy Black Neon Tetras are active, alert, and school tightly. Their stripes should be crisp, their fins open, and their bodies free from white spots, fraying, or clamped fins. If a fish isolates itself, breathes rapidly, or loses colour, check water quality first. Many issues in this species are linked to stress, poor filtration, or unsuitable tank mates rather than the fish itself.\u003c\/p\u003e\n\u003cp\u003eCommon diseases include ich, fin rot, velvet, and internal parasites. Because this species is small, early treatment matters. Improve water quality with partial water changes, raise temperature only when appropriate for the disease being treated, and quarantine affected fish in a hospital tank when possible. If you are looking at \u003cstrong\u003eblack neon tetra diseases\u003c\/strong\u003e or \u003cstrong\u003eblack neon tetra health\u003c\/strong\u003e, prevention is always easier than treatment. Good feeding, stable temperature, and low stress are the best long-term protection.\u003c\/p\u003e\n\u003cdiv class=\"warning-box\"\u003e\n  \u003ch4\u003e⚠️ Copper Medication Warning\u003c\/h4\u003e\n  \u003cp\u003eNEVER use copper-based medications with invertebrates - lethal to shrimp! If your aquarium contains shrimp or snails, move affected fish to a separate treatment tank before using copper-based products.\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\u003eQuarantine for 2-4 weeks in a separate tank\u003c\/li\u003e\n    \u003cli\u003eUse a sponge filter and heater\u003c\/li\u003e\n    \u003cli\u003eObserve for parasites, fin damage, and abnormal swimming\u003c\/li\u003e\n    \u003cli\u003eFeed lightly and keep water pristine\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2 id=\"behavior\"\u003eHow Do Black Neon Tetras Behave in the Aquarium?\u003c\/h2\u003e\n\u003cp\u003eThese fish are active, social, and most confident in a proper shoal. They spend much of the day cruising the midwater zone, then dart into plants when startled. In a group of eight or more, they display natural \u003cstrong\u003ebehaviour\u003c\/strong\u003e, tighter schooling, and more consistent colour. This is why they are such a good fit for aquarists looking for \u003cstrong\u003epeaceful community fish\u003c\/strong\u003e with visible movement but low aggression.\u003c\/p\u003e\n\u003cp\u003eThey are not solitary fish, and a small group often looks nervous. If you want the best display, keep them in a larger shoal and provide open swimming space alongside dense planting. Their activity makes them an excellent choice for aquarists who want a lively tank without the chaos of more boisterous species. They are also a good answer to the question \u003cstrong\u003ewhat size fish should i get\u003c\/strong\u003e when the goal is a manageable, attractive school.\u003c\/p\u003e\n\n\u003ch2 id=\"why-buy\"\u003eWhy Buy Black Neon Tetras from Tropical Fish Co?\u003c\/h2\u003e\n\u003cp\u003eOur Black Neon Tetras are selected for strong body shape, clean stripe definition, and reliable feeding response, which matters when you want a shoal that settles quickly in a home aquarium. Each fish is quarantined before sale, carefully observed for health, and acclimated with UK water conditions in mind. That means less stress on arrival and a smoother transition into your planted tank. If you are searching for \u003cstrong\u003ebuy aquarium fish online UK\u003c\/strong\u003e, \u003cstrong\u003elive fish for sale UK\u003c\/strong\u003e, or the \u003cstrong\u003ebest place to buy tropical fish online UK\u003c\/strong\u003e, this species is a great example of the care we put into every order.\u003c\/p\u003e\n\u003cp\u003eWe pack live fish professionally for tracked delivery with insulated packaging and seasonal heat packs when needed. Clear care guidance is included so you know exactly how to acclimate your new shoal. Customers often choose us when they want \u003cstrong\u003efreshwater fish for sale UK\u003c\/strong\u003e that arrive healthy and ready to settle, rather than fish that have been handled too many times. If you are comparing \u003cstrong\u003echeap Black Neon Tetra UK\u003c\/strong\u003e offers, remember that value is about more than price; it is about healthy stock, correct packing, and dependable support.\u003c\/p\u003e\n\u003cdiv class=\"care-highlight\"\u003e\n  \u003ch4\u003eWhy Choose Tropical Fish Co for Black Neon Tetra\u003c\/h4\u003e\n  \u003cul\u003e\n    \u003cli\u003eCarefully selected shoals with strong stripe contrast and active feeding response\u003c\/li\u003e\n    \u003cli\u003eQuarantined and monitored before dispatch for safer introduction to your aquarium\u003c\/li\u003e\n    \u003cli\u003ePacked for live fish delivery with insulated protection and seasonal heat packs\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003eOrder your Black Neon Tetra today with confidence if you are ready to build a calm, colourful, and easy-care community tank. We support hobbyists across the UK who want \u003cstrong\u003eorder Black Neon Tetra online UK\u003c\/strong\u003e, \u003cstrong\u003eBlack Neon Tetra shop UK\u003c\/strong\u003e, and dependable \u003cstrong\u003eBlack Neon Tetra delivery UK\u003c\/strong\u003e without guesswork. Whether you are setting up your first shoal or refining a planted display, this is one of the most rewarding \u003cstrong\u003efreshwater tropical fish UK\u003c\/strong\u003e options available.\u003c\/p\u003e\n\n\u003ch2 id=\"related-products\"\u003eWhat Other Fish and Products Pair Well With Black Neon Tetras?\u003c\/h2\u003e\n\u003cp\u003eTo complete your setup, consider adding \u003ca href=\"\/products\/freshwater-tropical-fish-uk\"\u003eCorydoras\u003c\/a\u003e for the bottom level, \u003ca href=\"\/products\/freshwater-tropical-fish-uk\"\u003eAlbino Cherry Barb\u003c\/a\u003e for a lively but peaceful midwater companion, or \u003ca href=\"\/products\/freshwater-tropical-fish-uk\"\u003eDwarf Pencilfish\u003c\/a\u003e for a natural South American theme. For equipment, a \u003ca href=\"\/products\/freshwater-tropical-fish-uk\"\u003egentle aquarium heater\u003c\/a\u003e, \u003ca href=\"\/products\/freshwater-tropical-fish-uk\"\u003efine aquarium sand\u003c\/a\u003e, and \u003ca href=\"\/products\/freshwater-tropical-fish-uk\"\u003elive tropical fish food\u003c\/a\u003e will help you build a stable, attractive tank. If you want more colour, the \u003ca href=\"\/products\/freshwater-tropical-fish-uk\"\u003eNeon Blue Tetra\u003c\/a\u003e and \u003ca href=\"\/products\/freshwater-tropical-fish-uk\"\u003ePenguin Tetra\u003c\/a\u003e are excellent companions for a larger school display.\u003c\/p\u003e","brand":"Tropical Fish Co","offers":[{"title":"2 - 2,5 cm","offer_id":57379777020239,"sku":"S166","price":3.43,"currency_code":"GBP","in_stock":true},{"title":"2,5 - 3 cm","offer_id":57467439645007,"sku":"2166","price":3.43,"currency_code":"GBP","in_stock":true},{"title":"3 - 3,5 cm","offer_id":57467439677775,"sku":"2185","price":2.57,"currency_code":"GBP","in_stock":true},{"title":"\u003e3,5cm","offer_id":57467439710543,"sku":"2186","price":4.29,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/1408\/6735\/files\/black-neon-tetra-a-striking-jewel-of-the-freshwater-aqu-hero-driftwood-s166.webp?v=1776719548","url":"https:\/\/tropical-fish-co.myshopify.com\/products\/freshwater-tropical-fish-uk-tetras-for-sale-black-neon-tetra","provider":"Tropical Fish Co","version":"1.0","type":"link"}