{"product_id":"killifish-for-sale-uk-eggs-british-association-rare-fish-steel-blue-lyretail","title":"Green Lyretail Killifish (Aphyosemion gardneri)","description":"\u003cp\u003eIf you are looking for \u003cstrong\u003ekillifish for sale UK\u003c\/strong\u003e that combine colour, movement, and real breeding potential, the Steel Blue Lyretail Killifish \u003cem\u003eFundulopanchax gardneri\u003c\/em\u003e is one of the most rewarding choices in the hobby. This African killifish is famous for its shimmering steel-blue body, lyre-shaped tail, and confident surface-dwelling style, making it a standout among \u003cstrong\u003ecolourful killifish species\u003c\/strong\u003e, \u003cstrong\u003eoddball tropical fish\u003c\/strong\u003e, and \u003cstrong\u003erare fish UK\u003c\/strong\u003e options. Adults reach around 6 cm, live for about 3 years, and suit keepers who want a \u003cstrong\u003emoderate care\u003c\/strong\u003e species with genuine personality rather than a passive display fish. It is peaceful enough for the right community, yet active enough to keep the upper levels of the aquarium lively, which is why many aquarists search for \u003cstrong\u003epeaceful killifish for community tank\u003c\/strong\u003e setups, \u003cstrong\u003enano fish UK\u003c\/strong\u003e displays, and \u003cstrong\u003efreshwater killifish UK\u003c\/strong\u003e collections.\u003c\/p\u003e\n\u003cp\u003eUnlike many fish sold as simple ornamentals, this species also offers a real chance to observe courtship, spawning mop setup, and fry rearing at home. That makes it popular with anyone researching \u003cstrong\u003ehow to breed killifish\u003c\/strong\u003e, \u003cstrong\u003ebest killifish for beginners\u003c\/strong\u003e, or even \u003cstrong\u003ewhat tropical fish have babies\u003c\/strong\u003e. It is also a favourite for aquarists comparing \u003cstrong\u003ekillifish vs guppy\u003c\/strong\u003e, \u003cstrong\u003eannual vs non-annual killifish\u003c\/strong\u003e, and \u003cstrong\u003ewhat aquarium fish are livebearers\u003c\/strong\u003e, because killifish have their own fascinating reproductive strategy. See our detailed photos showing the male’s vivid fins, the female’s subtler patterning, and the graceful movement that makes this species so popular with collectors. If you want a fish that is beautiful, breedable, and full of character, this is a superb choice for your next aquarium.\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\u003eFundulopanchax gardneri\u003c\/em\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCare Level:\u003c\/strong\u003e Moderate\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 20-24°C (68-75°F)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003epH Range:\u003c\/strong\u003e 6.0-7.0\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eLifespan:\u003c\/strong\u003e Up to 3 years\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTemperament:\u003c\/strong\u003e Peaceful, slightly predatory toward tiny fry\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDiet:\u003c\/strong\u003e Carnivore, with live foods preferred\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 Cyprinodontiformes\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFamily:\u003c\/strong\u003e Aplocheilidae \/ Nothobranchiidae\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eGenus:\u003c\/strong\u003e \u003cem\u003eFundulopanchax\u003c\/em\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003eThe Steel Blue Lyretail Killifish sits in one of the most interesting groups in the aquarium trade, alongside panchax fish, rocket panchax, and other \u003cstrong\u003emiscellaneous tropical fish\u003c\/strong\u003e often sought by hobbyists who enjoy \u003cstrong\u003eoddball tropical fish\u003c\/strong\u003e. In the UK, it is commonly discussed by members of the \u003cstrong\u003eBritish Killifish Association\u003c\/strong\u003e and by collectors searching for \u003cstrong\u003erare killifish for collectors\u003c\/strong\u003e. The species is closely related to other colourful West African killifish, including \u003ca href=\"\/products\/killifish-for-sale-uk\"\u003eFundulopanchax gardneri «Akure»\u003c\/a\u003e, \u003ca href=\"\/products\/killifish-for-sale-uk\"\u003eAphyosemion australe «Gold»\u003c\/a\u003e, and \u003ca href=\"\/products\/killifish-for-sale-uk\"\u003eFundulopanchax amieti «Edéa-Yaoundé Km 18 C\u003c\/a\u003e. It is a classic example of a fish that rewards careful husbandry, good water quality, and a well-planned aquarium.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2 id=\"origin\"\u003eWhere Do Steel Blue Lyretail Killifish Come From? Natural Habitat Explained\u003c\/h2\u003e\n\u003cp\u003eIn the wild, \u003cem\u003eFundulopanchax gardneri\u003c\/em\u003e comes from freshwater habitats in Nigeria and Cameroon, especially tributary streams, marshes, and shallow floodplain waters in the Benue and Cross River basins. This is important when planning a \u003cstrong\u003ekillifish biotope aquarium\u003c\/strong\u003e or any setup inspired by \u003cstrong\u003ekillifish habitat\u003c\/strong\u003e. These fish are adapted to calm, plant-filled margins with leaf litter, soft cover, and gentle current rather than strong open-water flow. They often stay near the surface, where they can dart between floating plants and roots while hunting small invertebrates.\u003c\/p\u003e\n\u003cp\u003eWild water is usually warm, slightly acidic to neutral, and rich in dissolved organics from decaying leaves and submerged vegetation. That means the species does best in stable conditions that match \u003cstrong\u003eSteel Blue Lyretail Killifish water parameters\u003c\/strong\u003e and \u003cstrong\u003eSteel Blue Lyretail Killifish ideal water conditions\u003c\/strong\u003e: soft to moderately hard water, a pH near neutral, and temperatures that avoid extremes. The species is not a livebearer, so it is often misunderstood by aquarists asking \u003cstrong\u003ewhich aquarium fish are livebearers\u003c\/strong\u003e or \u003cstrong\u003ewhat tropical fish are livebearers\u003c\/strong\u003e. Unlike \u003cstrong\u003elivebearer fish for sale uk\u003c\/strong\u003e species such as guppies and mollies, killifish lay eggs, often in plants or spawning mops.\u003c\/p\u003e\n\u003cp\u003eIn nature, they feed on insect larvae, tiny worms, crustaceans, and other small prey. That carnivorous diet explains why they thrive on live and frozen foods in captivity. Their natural habitat also helps explain why they are sometimes grouped with \u003cstrong\u003etropical killifish UK\u003c\/strong\u003e, \u003cstrong\u003efreshwater pond fish for sale uk\u003c\/strong\u003e searches, and even broader \u003cstrong\u003efreshwater fish uk for sale\u003c\/strong\u003e collections. While not a pond fish, they do appreciate a planted, calm aquarium with subdued lighting and safe resting places. Conservation status is not a major concern in the hobby context, but responsible sourcing still matters, especially for \u003cstrong\u003erare fish UK\u003c\/strong\u003e buyers and collectors who want healthy stock from reliable lines.\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 floating plants, leaf litter, and a dark substrate to help this species feel secure. That simple change often improves colour, feeding response, and spawning activity in \u003cstrong\u003eSteel Blue Lyretail Killifish for planted tank\u003c\/strong\u003e setups.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2 id=\"tank-setup\"\u003eHow to Set Up the Perfect Tank for Steel Blue Lyretail Killifish\u003c\/h2\u003e\n\u003ch3\u003eTank Size Requirements\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eSteel Blue Lyretail Killifish minimum tank size\u003c\/strong\u003e is 40 litres, but a 60-litre aquarium is a better long-term choice for a pair or trio. This species is active in the upper water layer, so more horizontal space is useful even though it is a \u003cstrong\u003ekillifish for small aquarium\u003c\/strong\u003e candidate. For a male with two females, a 45-60 cm tank gives enough room to reduce chasing and allows the fish to establish comfortable territories. When aquarists ask about \u003cstrong\u003eSteel Blue Lyretail Killifish tank size\u003c\/strong\u003e, the answer depends on goals: breeding pairs can be kept in smaller, controlled tanks, while display groups benefit from more room.\u003c\/p\u003e\n\u003cp\u003eBecause this is a surface-oriented fish, a tight-fitting lid is essential. Killifish are known jumpers, and even calm individuals can launch themselves when startled. This is one of the most important \u003cstrong\u003ekillifish aquarium requirements\u003c\/strong\u003e and one of the first things experienced keepers mention in any \u003cstrong\u003eSteel Blue Lyretail Killifish care guide\u003c\/strong\u003e. A secure cover also helps keep humidity high above the water line, which can be useful for labyrinth-like surface activity and reduces the risk of escape.\u003c\/p\u003e\n\n\u003ch3\u003eWater Parameters\u003c\/h3\u003e\n\u003cp\u003eFor \u003cstrong\u003eSteel Blue Lyretail Killifish water temperature\u003c\/strong\u003e, aim for 20-24°C, with 22-23°C often being a sweet spot for everyday keeping. These are also the practical \u003cstrong\u003ekillifish temperature requirements\u003c\/strong\u003e for stable health and steady appetite. The species prefers a pH of 6.0-7.0 and \u003cstrong\u003ekillifish water hardness\u003c\/strong\u003e in the soft to moderately hard range, roughly 3-12 dGH. If you are researching \u003cstrong\u003eSteel Blue Lyretail Killifish pH level\u003c\/strong\u003e or \u003cstrong\u003eSteel Blue Lyretail Killifish water parameters\u003c\/strong\u003e, the key is consistency rather than chasing exact numbers. Sudden swings cause more stress than slightly imperfect but stable water.\u003c\/p\u003e\n\u003cp\u003eUse dechlorinated water, keep ammonia and nitrite at zero, and maintain low nitrate through regular water changes. In a planted tank, 20-30% weekly changes are usually enough. This species tolerates a range of conditions, but it shows best colour and breeding behaviour in clean, well-oxygenated water. That is why many keepers compare \u003cstrong\u003ekillifish requirements\u003c\/strong\u003e with other \u003cstrong\u003ecolourful freshwater fish UK\u003c\/strong\u003e favourites and find this species easier than it first appears.\u003c\/p\u003e\n\n\u003ch3\u003eFiltration\u003c\/h3\u003e\n\u003cp\u003eChoose gentle filtration with stable biological capacity. A sponge filter, air-driven corner filter, or small hang-on-back filter with a spray bar works well because strong current can stress surface fish. If you are building a \u003cstrong\u003eSteel Blue Lyretail Killifish nano tank\u003c\/strong\u003e, a sponge filter is often the safest option. The goal is clean water without blasting the fish around the tank. For aquarists asking about \u003cstrong\u003ekillifish aquarium requirements\u003c\/strong\u003e, low to moderate flow is the rule.\u003c\/p\u003e\n\u003cp\u003eFor equipment planning, a reliable heater helps maintain the correct range in UK homes, especially in winter. A fine-grained dark substrate and a few pieces of driftwood help recreate the fish’s natural setting. Plants such as Java fern, Anubias, Cryptocoryne, and floating Salvinia are especially useful. If you are shopping for a full setup, consider a quality \u003ca href=\"\/products\/killifish-for-sale-uk\"\u003eaquarium heater\u003c\/a\u003e, a gentle \u003ca href=\"\/products\/killifish-for-sale-uk\"\u003esponge filter\u003c\/a\u003e, and a dark \u003ca href=\"\/products\/killifish-for-sale-uk\"\u003eaquarium substrate\u003c\/a\u003e to support both comfort and colour.\u003c\/p\u003e\n\n\u003ch3\u003eSubstrate, Plants, and Decor\u003c\/h3\u003e\n\u003cp\u003eThe best \u003cstrong\u003ekillifish substrate preference\u003c\/strong\u003e is usually dark sand or fine gravel, because it highlights colour and keeps the fish relaxed. A dark base also makes the male’s blue sheen and red spotting stand out more strongly. In a planted tank, include floating cover, broad-leaf plants, and fine-leaved plants where eggs can be deposited. This makes the species ideal for aquarists searching for \u003cstrong\u003eSteel Blue Lyretail Killifish for planted tank\u003c\/strong\u003e ideas. You can also use a \u003cstrong\u003ekillifish spawning mop setup\u003c\/strong\u003e if you want to collect eggs for controlled breeding.\u003c\/p\u003e\n\u003cp\u003eFor a naturalistic display, combine leaf litter with driftwood and low light. That combination works well in a \u003cstrong\u003ekillifish biotope aquarium\u003c\/strong\u003e and helps the fish behave more confidently. If you want a more decorative layout, floating plants and a black background can intensify colour and make the fish easier to observe. Many keepers find that this species is one of the \u003cstrong\u003ebest killifish for beginners\u003c\/strong\u003e when they want a rewarding but manageable breeding fish.\u003c\/p\u003e\n\n\u003ch3\u003eLighting Requirements\u003c\/h3\u003e\n\u003cp\u003eModerate lighting is ideal. Too much light can make the fish skittish, while low light with floating plants often brings out better colour and natural behaviour. A photoperiod of 7-9 hours is usually enough. If you are comparing \u003cstrong\u003ekillifish for small aquarium\u003c\/strong\u003e options or planning a display for \u003cstrong\u003erare killifish for collectors\u003c\/strong\u003e, remember that the right lighting can matter as much as the fish itself.\u003c\/p\u003e\n\u003cdiv class=\"info-box\"\u003e\n  \u003ch4\u003e🔹 Quick Setup Checklist\u003c\/h4\u003e\n  \u003cul\u003e\n    \u003cli\u003e40-60 litre tank with tight lid\u003c\/li\u003e\n    \u003cli\u003eHeater set to 22-23°C\u003c\/li\u003e\n    \u003cli\u003eSoft, gentle filtration\u003c\/li\u003e\n    \u003cli\u003eDark substrate and leaf litter\u003c\/li\u003e\n    \u003cli\u003eFloating plants and spawning mop\u003c\/li\u003e\n    \u003cli\u003eWeekly water changes of 20-30%\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 killifish. A mature filter and stable bacteria colony are essential for long-term success, especially if you plan to breed or keep a pair in a smaller aquarium.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2 id=\"feeding\"\u003eWhat Do Steel Blue Lyretail Killifish Eat? Complete Feeding Guide\u003c\/h2\u003e\n\u003cp\u003eThis species is a carnivore, and that is one of the most important points in any \u003cstrong\u003eSteel Blue Lyretail Killifish feeding guide\u003c\/strong\u003e. In the wild, they hunt small live prey, so they respond best to foods that move or closely mimic movement. That means live daphnia, brine shrimp, mosquito larvae, grindal worms, and bloodworms are excellent staples. Frozen foods are also accepted readily once the fish settle in. If you have been asking \u003cstrong\u003eSteel Blue Lyretail Killifish diet\u003c\/strong\u003e questions, the short answer is simple: give them meaty, protein-rich foods and they will thrive.\u003c\/p\u003e\n\u003cp\u003eFor daily feeding, use small portions once or twice a day. Overfeeding is a common mistake, especially in species kept in planted tanks where excess food can hide in the substrate. A varied diet improves colour, breeding readiness, and overall \u003cstrong\u003ekillifish health\u003c\/strong\u003e. Many aquarists who compare \u003cstrong\u003ewhat tropical fish eat other fish\u003c\/strong\u003e or research \u003cstrong\u003ewhat tropical fish can be kept together\u003c\/strong\u003e are actually trying to understand whether a species is safe with smaller tank mates. With this killifish, the answer is that tiny fry and very small shrimp may be viewed as food, so choose companions carefully.\u003c\/p\u003e\n\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\u003eFrozen daphnia or micro pellets\u003c\/td\u003e\n\u003ctd\u003eSmall pinch, eaten in 1-2 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eEvening\u003c\/td\u003e\n\u003ctd\u003eLive or frozen bloodworms \/ brine shrimp\u003c\/td\u003e\n\u003ctd\u003eSmall portion, no leftovers\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eStaple Foods\u003c\/h3\u003e\n\u003cp\u003eUse quality frozen foods and small carnivore pellets as the daily base. While live foods are preferred, a well-trained fish will also take prepared foods. This is useful for keepers searching for \u003cstrong\u003ebuy killifish UK\u003c\/strong\u003e or \u003cstrong\u003ebuy Steel Blue Lyretail Killifish UK\u003c\/strong\u003e and wanting a species that can adapt to home feeding routines. If you are comparing \u003cstrong\u003ebest killifish species comparison\u003c\/strong\u003e options, food acceptance is one reason this species is popular.\u003c\/p\u003e\n\n\u003ch3\u003eSupplemental Foods and Treats\u003c\/h3\u003e\n\u003cp\u003eRotate live foods to improve conditioning before breeding. Brine shrimp, white worms, and chopped earthworms are excellent. These foods help with \u003cstrong\u003eSteel Blue Lyretail Killifish breeding\u003c\/strong\u003e and can support egg production in females. For aquarists asking \u003cstrong\u003ehow to breed killifish\u003c\/strong\u003e, good conditioning food is often the difference between occasional spawning and consistent results.\u003c\/p\u003e\n\n\u003ch3\u003eFoods to Avoid\u003c\/h3\u003e\n\u003cp\u003eAvoid large pellets, stale frozen food, and anything that sits uneaten for too long. Do not rely on flake food alone. Also avoid medicated foods unless treating a diagnosed issue, because unnecessary medication can reduce appetite and harm water quality. If you are keeping shrimp or snails with the fish, remember that \u003cstrong\u003ewhat tropical fish can live together\u003c\/strong\u003e depends on size and temperament, not just appearance.\u003c\/p\u003e\n\u003cdiv class=\"warning-box\"\u003e\n  \u003ch4\u003e⚠️ Overfeeding Warning\u003c\/h4\u003e\n  \u003cp\u003eOverfeeding causes ammonia spikes, cloudy water, and stressed fish. With killifish, it is better to feed small amounts more often than to dump in a large meal. Remove leftovers quickly and keep your maintenance routine tight.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"food-recommendation\"\u003e\n  \u003ca href=\"\/products\/killifish-for-sale-uk\"\u003eFrozen Bloodworms\u003c\/a\u003e — A rich conditioning food that supports colour, spawning, and strong body condition.\n\u003c\/div\u003e\n\u003cdiv class=\"food-recommendation\"\u003e\n  \u003ca href=\"\/products\/killifish-for-sale-uk\"\u003eBrine Shrimp Cubes\u003c\/a\u003e — Ideal for regular feeding and getting shy fish into a reliable routine.\n\u003c\/div\u003e\n\u003cdiv class=\"food-recommendation\"\u003e\n  \u003ca href=\"\/products\/killifish-for-sale-uk\"\u003eMicro Pellets for Carnivores\u003c\/a\u003e — A practical staple once the fish are settled and feeding confidently.\n\u003c\/div\u003e\n\n\u003ch2 id=\"appearance\"\u003eSteel Blue Lyretail Killifish Appearance: Colors, Patterns \u0026amp; Varieties\u003c\/h2\u003e\n\u003cp\u003eThe Steel Blue Lyretail Killifish is one of the most attractive \u003cstrong\u003emost colourful killifish\u003c\/strong\u003e available to home aquarists. Males are the showpiece: they display a steel-blue body, red spotting, and elegant yellow-tinted fin edges that frame the lyre-shaped tail. Females are more subdued, with brown spotting and a softer overall look, which is typical of sexually dimorphic killifish. Adults usually reach about 6 cm, making them a good fit for \u003cstrong\u003ekillifish for sale uk medium size\u003c\/strong\u003e searches as well as \u003cstrong\u003enano fish UK\u003c\/strong\u003e collections where a larger nano species is desired.\u003c\/p\u003e\n\u003cp\u003eBody shape is slim and streamlined, with a slightly upturned mouth suited to surface feeding. The fins are expressive, especially in males during courtship or territorial display. In the right light, the blue sheen can look almost metallic, which is why the species is often included in lists of \u003cstrong\u003ecolourful freshwater fish UK\u003c\/strong\u003e and \u003cstrong\u003ecolourful killifish species\u003c\/strong\u003e. Some hobbyists compare it with \u003cstrong\u003eblue gularis killifish for sale uk\u003c\/strong\u003e stock, while others prefer the more compact and manageable look of this species. Our photos show the intense chocolate-brown shading in females and the bright red spotting that becomes more visible in mature males under good lighting and a dark substrate.\u003c\/p\u003e\n\u003cp\u003eIf you are choosing between \u003cstrong\u003ekillifish for sale uk black\u003c\/strong\u003e, \u003cstrong\u003ekillifish for sale uk red\u003c\/strong\u003e, or \u003cstrong\u003ekillifish for sale uk green\u003c\/strong\u003e searches, this species offers a balanced palette that is both elegant and eye-catching. Good diet, calm surroundings, and stable water all help colour develop fully. Many aquarists find that a planted, low-stress aquarium produces the best display, especially when the fish are kept in a trio rather than a crowded tank.\u003c\/p\u003e\n\n\u003ch2 id=\"compatibility\"\u003eWhat Fish Can Live With Steel Blue Lyretail Killifish? Compatibility Guide\u003c\/h2\u003e\n\u003cp\u003eAlthough peaceful, this species is not a fish for every community. It is best described as a \u003cstrong\u003epeaceful killifish for community tank\u003c\/strong\u003e setups with calm, similarly sized fish that will not nip fins or outcompete it at feeding time. Because it stays near the top, it works well with mid-water and bottom-dwelling species that occupy different zones. If you are wondering \u003cstrong\u003ewhat tropical fish can be kept together\u003c\/strong\u003e or \u003cstrong\u003ewhat tropical fish can live together\u003c\/strong\u003e, think in terms of temperament, size, and water preferences.\u003c\/p\u003e\n\u003cp\u003eIdeal tank mates include small rasboras, peaceful tetras, pygmy corydoras, otocinclus, and non-nippy gouramis in appropriately sized tanks. Other compatible killifish can also work, especially if you are assembling a specialist setup with species such as \u003ca href=\"\/products\/killifish-for-sale-uk\"\u003ePseudepiplatys annulatus - Clown Killifish\u003c\/a\u003e, \u003ca href=\"\/products\/killifish-for-sale-uk\"\u003eAplocheilus lineatus «Gold»\u003c\/a\u003e, \u003ca href=\"\/products\/killifish-for-sale-uk\"\u003eEpiplatys dageti monroviae\u003c\/a\u003e, \u003ca href=\"\/products\/killifish-for-sale-uk\"\u003eTanganyika Killifish - Lamprichthys tanganicanus\u003c\/a\u003e, and \u003ca href=\"\/products\/killifish-for-sale-uk\"\u003eHypsolebias picturatus «Volta das Pedras»\u003c\/a\u003e. For collectors browsing \u003cstrong\u003erare killifish for collectors\u003c\/strong\u003e or comparing \u003cstrong\u003ekillifish for sale uk reddit\u003c\/strong\u003e opinions, this species is often praised for being both beautiful and manageable.\u003c\/p\u003e\n\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\/killifish-for-sale-uk\"\u003eClown Killifish\u003c\/a\u003e\u003c\/td\u003e\n      \u003ctd\u003e✅ Yes\u003c\/td\u003e\n      \u003ctd\u003eBest in a planted tank with calm flow and plenty of cover.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003ca href=\"\/products\/killifish-for-sale-uk\"\u003eAphyosemion australe «Gold»\u003c\/a\u003e\u003c\/td\u003e\n      \u003ctd\u003e⚠️ Caution\u003c\/td\u003e\n      \u003ctd\u003ePossible in larger tanks, but monitor for mild fin displays and food competition.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eMalawi cichlids\u003c\/td\u003e\n      \u003ctd\u003e❌ Avoid\u003c\/td\u003e\n      \u003ctd\u003eToo aggressive, too hard on water, and completely wrong temperament.\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eSpecies to Avoid\u003c\/h3\u003e\n\u003cp\u003eAvoid fin-nippers, boisterous barbs, large cichlids, and anything that will see the killifish as food. Very tiny shrimp can also be at risk, especially fry-sized Neocaridina. If you are searching \u003cstrong\u003ewhat aquarium fish are livebearers\u003c\/strong\u003e or comparing \u003cstrong\u003ekillifish vs guppy\u003c\/strong\u003e, remember that guppies are usually more active in open water and may be too busy for this fish’s calmer style. A good rule is to avoid mixing with species that are much faster, much larger, or much more aggressive.\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 introducing them to your killifish display. This reduces the risk of parasites, bacterial issues, and stress-related losses, especially in specialist community tanks.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2 id=\"breeding\"\u003eHow to Breed Steel Blue Lyretail Killifish: Complete Breeding Guide\u003c\/h2\u003e\n\u003cp\u003eBreeding is one of the biggest reasons aquarists search for \u003cstrong\u003ekillifish eggs for sale uk\u003c\/strong\u003e, \u003cstrong\u003ekillifish eggs for sale online\u003c\/strong\u003e, and \u003cstrong\u003elive killifish eggs for sale uk\u003c\/strong\u003e. The Steel Blue Lyretail Killifish has a breeding difficulty of moderate, which means it is very achievable for hobbyists who are comfortable with water changes and fry care. If you want to learn \u003cstrong\u003ehow to breed killifish\u003c\/strong\u003e, this species is a great place to start because the male’s displays are easy to observe and the eggs are straightforward to collect.\u003c\/p\u003e\n\u003cp\u003eUse a breeding tank of 20-40 litres with soft water, a temperature near 23°C, and a spawning mop or fine plants. Condition the pair or trio with live foods for at least one to two weeks. Males will intensify in colour and chase females gently. Females typically scatter eggs into moss, mops, or plant roots. This is why \u003cstrong\u003ekillifish spawning mop setup\u003c\/strong\u003e is such a useful search term for this species. If you are also researching \u003cstrong\u003ewhat to do when tropical fish have babies\u003c\/strong\u003e, the answer here is to remove eggs or provide a safe fry tank depending on your breeding method.\u003c\/p\u003e\n\u003cp\u003eEggs usually hatch in around 10-14 days if kept warm and clean, though timing can vary with temperature and water chemistry. Fry should be fed infusoria, vinegar eels, or newly hatched baby brine shrimp at first, then graduate to microworms and crushed live foods. This is one of the reasons killifish are often listed among the \u003cstrong\u003eeasiest killifish to breed\u003c\/strong\u003e once the basic method is understood. For hobbyists comparing \u003cstrong\u003eannual vs non-annual killifish\u003c\/strong\u003e, this species is non-annual, so it does not require dry incubation of eggs like some seasonal species.\u003c\/p\u003e\n\u003cdiv class=\"tip-box\"\u003e\n  \u003ch4\u003eAdvanced Breeding Tip\u003c\/h4\u003e\n  \u003cp\u003eTo increase egg yield, keep one male with two females and feed heavily with live foods while maintaining stable water quality. Collect eggs from the mop every day and move them to a separate hatching container to prevent fungus and predation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003eMany UK breeders and club members, including those connected with the \u003cstrong\u003eBritish Killifish Association\u003c\/strong\u003e, value this species because it rewards careful line management and produces attractive offspring. It is also a strong choice for aquarists looking at \u003cstrong\u003ebaby killifish for sale uk\u003c\/strong\u003e or comparing with \u003cstrong\u003eclown killifish for sale uk\u003c\/strong\u003e and \u003cstrong\u003egolden wonder killifish for sale\u003c\/strong\u003e listings.\u003c\/p\u003e\n\n\u003ch2 id=\"comparison\"\u003eSteel Blue Lyretail Killifish vs Similar Species: Which Should You Choose?\u003c\/h2\u003e\n\u003cp\u003eComparing killifish helps you choose the right species for your tank size, experience level, and breeding goals. If you are deciding between a display fish, a breeding fish, or a collector’s species, the Steel Blue Lyretail Killifish sits in a very balanced position. It is more colourful than many beginner fish, but less demanding than some specialist annual species. That makes it a strong option for people searching \u003cstrong\u003ebest killifish species comparison\u003c\/strong\u003e, \u003cstrong\u003ebest killifish for beginners\u003c\/strong\u003e, or \u003cstrong\u003erare killifish for collectors\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003ctable class=\"comparison-table\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eSteel Blue Lyretail Killifish\u003c\/th\u003e\n\u003cth\u003eClown Killifish\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\u003e6 cm\u003c\/td\u003e\n\u003ctd\u003e3.5 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCare Level\u003c\/td\u003e\n\u003ctd\u003eModerate\u003c\/td\u003e\n\u003ctd\u003eEasy-Moderate\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTemperature\u003c\/td\u003e\n\u003ctd\u003e20-24°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£114.18\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\u003eBreeding, display, planted tanks\u003c\/td\u003e\n\u003ctd\u003eNano planted tanks\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ctable class=\"comparison-table\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eSteel Blue Lyretail Killifish\u003c\/th\u003e\n\u003cth\u003eGolden Wonder Killifish\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\u003e6 cm\u003c\/td\u003e\n\u003ctd\u003e10-12 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTemperament\u003c\/td\u003e\n\u003ctd\u003ePeaceful\u003c\/td\u003e\n\u003ctd\u003eSemi-predatory\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTank Style\u003c\/td\u003e\n\u003ctd\u003ePlanted community \/ breeding\u003c\/td\u003e\n\u003ctd\u003eLarger open aquarium\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eChoose this species if you want a compact, colourful fish that is easier to house than larger panchax fish and more substantial than tiny nano species. It is also a good middle ground for aquarists comparing \u003cstrong\u003ekillifish for sale uk cheap\u003c\/strong\u003e options with more specialised collector fish. If you want a fish that can be both a display animal and a breeding project, this one is hard to beat.\u003c\/p\u003e\n\n\u003ch2 id=\"health\"\u003eCommon Health Problems in Steel Blue Lyretail Killifish \u0026amp; How to Prevent Them\u003c\/h2\u003e\n\u003cp\u003eHealthy Steel Blue Lyretail Killifish are alert, colourful, and eager to feed. Their fins should be open and smooth, the body should be full but not swollen, and the fish should spend time near the top without gasping. Good \u003cstrong\u003ekillifish health\u003c\/strong\u003e starts with stable water, varied food, and low stress. If you are searching \u003cstrong\u003ekillifish for sale uk healthcare\u003c\/strong\u003e or comparing \u003cstrong\u003ewhich killifish for sale uk online\u003c\/strong\u003e options, remember that good husbandry matters more than marketing claims.\u003c\/p\u003e\n\u003cp\u003eCommon issues include fin rot, external parasites, bacterial infections, and constipation from overfeeding. Stress is often the trigger, especially in tanks with aggressive tank mates or poor water quality. Affected fish may clamp fins, lose colour, or stop eating. Treatment usually begins with improved water changes, isolation, and careful diagnosis before medication. Because this is a freshwater species, it does not need harsh salt treatment unless specifically advised for a particular issue. Keep in mind that \u003cstrong\u003ewhich killifish for sale uk price\u003c\/strong\u003e is only part of the equation; healthy stock saves money and frustration in the long run.\u003c\/p\u003e\n\u003cdiv class=\"warning-box\"\u003e\n  \u003ch4\u003e⚠️ Medication Warning\u003c\/h4\u003e\n  \u003cp\u003eNEVER use copper-based medications with invertebrates - lethal to shrimp! If you keep snails or shrimp in the same system, remove them before treating the tank or use a separate hospital aquarium.\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 tank for 2-4 weeks\u003c\/li\u003e\n    \u003cli\u003eObserve appetite, breathing, and fin condition daily\u003c\/li\u003e\n    \u003cli\u003eFeed lightly and keep water pristine\u003c\/li\u003e\n    \u003cli\u003eTreat only if symptoms appear\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003ePrevention is straightforward: keep the tank clean, avoid sudden temperature swings, and feed a varied carnivorous diet. This species is not difficult once settled, which is why it remains a strong choice for aquarists comparing \u003cstrong\u003erare fish UK\u003c\/strong\u003e listings, \u003cstrong\u003efreshwater killifish UK\u003c\/strong\u003e availability, and \u003cstrong\u003ekillifish for sale near me\u003c\/strong\u003e searches.\u003c\/p\u003e\n\n\u003ch2 id=\"behavior\"\u003eUnderstanding Steel Blue Lyretail Killifish Behavior in the Aquarium\u003c\/h2\u003e\n\u003cp\u003eThis species is active, curious, and mostly peaceful, but males can become territorial toward each other in smaller tanks. They spend much of their time in the upper third of the aquarium, where they patrol, display, and inspect floating plants. Their behaviour is one reason they are so popular with aquarists who enjoy \u003cstrong\u003esteel blue lyretail killifish behaviour\u003c\/strong\u003e and want something more engaging than a static display fish.\u003c\/p\u003e\n\u003cp\u003eIn a proper setup, you will see courtship flaring, gentle chasing, and frequent surface feeding. They are not schooling fish in the strict sense, but they do best in pairs or trios, which is why the common stocking advice is 1 male with 2 females. This social pattern also helps reduce stress and encourages natural colour. If you are comparing \u003cstrong\u003ewhat tropical fish can live together\u003c\/strong\u003e, remember that the species is best with calm companions and enough cover to break sight lines.\u003c\/p\u003e\n\u003cp\u003eMany owners describe this fish as one of the most rewarding \u003cstrong\u003eoddball tropical fish\u003c\/strong\u003e because it looks elegant without being difficult to observe. A planted tank, subdued lighting, and a quiet room help bring out the best behaviour. If you want more surface activity and better colour, keep the fish in a small group and feed at the same times each day.\u003c\/p\u003e\n\n\u003ch2 id=\"why-buy\"\u003eWhy Buy from Tropical Fish Co?\u003c\/h2\u003e\n\u003cp\u003eOur Steel Blue Lyretail Killifish are selected for strong colour, healthy body shape, and reliable feeding response, which matters when you are buying a species that is often judged by both beauty and breeding potential. We quarantine stock before sale, acclimate them to UK water conditions, and pack them with care for safe transit. If you are looking to \u003cstrong\u003eorder Steel Blue Lyretail Killifish online UK\u003c\/strong\u003e, \u003cstrong\u003ebuy killifish online UK\u003c\/strong\u003e, or arrange \u003cstrong\u003elive killifish delivery UK\u003c\/strong\u003e, we focus on making that process as smooth as possible.\u003c\/p\u003e\n\u003cp\u003eOrders are sent in insulated packaging with professional packing methods, and heat packs are used in colder months when needed. Each fish is checked before dispatch, and we include care guidance so you can set up the tank correctly from day one. That is especially helpful for buyers comparing \u003cstrong\u003ecan you buy freshwater fish online\u003c\/strong\u003e, \u003cstrong\u003ecan killifish for sale uk online\u003c\/strong\u003e, and even \u003cstrong\u003ecould killifish for sale uk price\u003c\/strong\u003e against other UK listings. We also support hobbyists asking about \u003cstrong\u003ekillifish for sale uk delivered\u003c\/strong\u003e, \u003cstrong\u003elive killifish delivery UK\u003c\/strong\u003e, and \u003cstrong\u003ekillifish for sale uk retail\u003c\/strong\u003e standards.\u003c\/p\u003e\n\u003cp\u003eOrder your Steel Blue Lyretail Killifish today with confidence if you want a colourful, breedable, and well-conditioned fish for a planted aquarium or specialist killifish setup. Whether you are building a collection of \u003cstrong\u003erare fish UK\u003c\/strong\u003e, comparing \u003cstrong\u003efreshwater fish uk for sale\u003c\/strong\u003e, or looking for a standout male and female pair, this species offers real value for dedicated aquarists.\u003c\/p\u003e\n\u003cdiv class=\"care-highlight\"\u003e\n  \u003ch4\u003eWhy Choose Tropical Fish Co for Steel Blue Lyretail Killifish\u003c\/h4\u003e\n  \u003cul\u003e\n    \u003cli\u003eCarefully selected male and female pairs for stronger breeding outcomes\u003c\/li\u003e\n    \u003cli\u003eQuarantined, observed, and acclimated for UK aquarium conditions\u003c\/li\u003e\n    \u003cli\u003eIdeal for planted tanks, breeding projects, and specialist killifish collections\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2 id=\"related-products\"\u003eComplete Your Setup\u003c\/h2\u003e\n\u003cp\u003eBuild a better killifish aquarium with a few carefully chosen companions and essentials. Pair your fish with \u003ca href=\"\/products\/killifish-for-sale-uk\"\u003eClown Killifish\u003c\/a\u003e for a smaller display, \u003ca href=\"\/products\/killifish-for-sale-uk\"\u003eAphyosemion australe «Gold»\u003c\/a\u003e for another elegant West African species, or \u003ca href=\"\/products\/killifish-for-sale-uk\"\u003eGolden Wonder Killifish\u003c\/a\u003e if you want a larger surface fish. For equipment, add a \u003ca href=\"\/products\/killifish-for-sale-uk\"\u003egentle sponge filter\u003c\/a\u003e, a reliable \u003ca href=\"\/products\/killifish-for-sale-uk\"\u003eaquarium heater\u003c\/a\u003e, and a quality \u003ca href=\"\/products\/killifish-for-sale-uk\"\u003espawning mop\u003c\/a\u003e. For food, keep \u003ca href=\"\/products\/killifish-for-sale-uk\"\u003efrozen bloodworms\u003c\/a\u003e and \u003ca href=\"\/products\/killifish-for-sale-uk\"\u003ebrine shrimp cubes\u003c\/a\u003e on hand to support colour, health, and breeding condition.\u003c\/p\u003e","brand":"Tropical Fish Co","offers":[{"title":"Default Title","offer_id":57379818832207,"sku":"3036","price":134.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/1408\/6735\/files\/gardners-killiefundulopanchax-gardneri-nsuka-aphyosemion-gardneri-green-natural-aquarium-3036.webp?v=1777850446","url":"https:\/\/tropical-fish-co.myshopify.com\/products\/killifish-for-sale-uk-eggs-british-association-rare-fish-steel-blue-lyretail","provider":"Tropical Fish Co","version":"1.0","type":"link"}