Hjerseni Lyretail Panchax (Aphyosemion australe hjersseni) - Killifish
£8.99
Gold Australe Lyretail Panchax is a peaceful, small Aphyosemion australe strain for mature planted aquariums with soft, slightly acidic water and a secure lid.
Aphyosemion australe
Australe Lyretail Panchax bond and breed in male/female pairs. Buying a pair gives them the social structure they need — and you get a better price per fish.
Gold Australe Lyretail Panchax is a peaceful, small Aphyosemion australe strain for mature planted aquariums with soft, slightly acidic water and a secure lid.
The Australe Lyretail Panchax, Aphyosemion australe, is the classic Cape Lopez Lyretail in its gold aquarium form. It is a small West African killifish with a warm orange-gold body, red spotting and a neat lyre-shaped tail. The best examples look bright without needing a loud aquarium around them: dark wood, living plants, floating cover and gentle water movement do most of the work.
This listing is for the Gold Australe / Gold Lyretail form of Aphyosemion australe. The old trade wording around this page had become repetitive, so the page has been rebuilt around useful care information instead: what the fish is, how to house it, what to feed it, which tank mates make sense, how the photos should be read, and what to expect when stock is available. The handle has been preserved because it is the indexed route, but the page text now uses natural species language rather than forced search phrases.
Best match: a mature planted aquarium, a covered lid, gentle filtration, small peaceful tank mates and a keeper who enjoys watching subtle behaviour. It is not a large or aggressive display fish. It rewards stability, good food and quiet surroundings.
| Scientific name | Aphyosemion australe |
|---|---|
| Trade names | Australe Lyretail Panchax, Gold Lyretail Killifish, Cape Lopez Lyretail, Gold Australe Killifish |
| Adult size | Usually around 5-6 cm, with FishBase listing 6 cm total length as the reported maximum for males |
| Temperament | Peaceful, shy to moderately assertive around its own kind, easily outcompeted by boisterous fish |
| Tank style | Soft-water planted aquarium with floating cover, fine-leaved plants, wood, leaf litter and a secure lid |
| Water | Soft to moderately soft, slightly acidic to neutral; avoid hard, alkaline, unstable conditions |
| Temperature | About 20-24°C for steady maintenance; avoid pushing them hot long term |
| Diet | Small frozen and live foods, with suitable fine prepared foods accepted by settled fish |
| Stock note | This SKU is currently out of stock in Shopify; the care guide remains here so customers can plan properly before the next availability window |
Aphyosemion australe is a real species, not a generic label for any orange killifish. FishBase lists the common name Lyretail Panchax, places it in the African rivuline killifish group, and records both chocolate and gold aquarium colour forms. Aquarium Glaser also describes the fish as the Cape Lopez killifish, historically connected with imports from the Gabon coast around Port-Gentil and Cape Lopez. That identity matters because several other killifish are sold with similar words such as lyretail, panchax, gardneri, Fundulopanchax or nothobranch. They are not all the same fish.
The gold form is a cultivated aquarium strain of A. australe. It keeps the same basic body shape as the wild-type fish but replaces the darker chocolate colouring with orange-gold colour. Males show the strongest finnage and colour. Females are usually softer in tone, less extended in the fins and more discreet, which is normal for the species rather than a sign of poor condition.
Use this page when you are planning for the Gold Australe / Cape Lopez Lyretail type specifically. If you want a larger, bolder or more boisterous killifish, a different species may suit you better. If you want a calm, colourful pair or small group for a planted soft-water aquarium, this is one of the most rewarding choices in the hobby.
The appeal of Australe Lyretails is partly visual and partly behavioural. The fish hover, inspect surface cover, pick at tiny foods and display with a restrained confidence once settled. They do not need a high-energy aquascape. In fact, they usually look better in a quieter layout where their colour is contrasted against dark wood, moss, roots and shaded plants.
A well-designed aquarium should give them several layers: an open area near the front for feeding and viewing, fine-leaved plants or moss for cover, floating plants to break up light, and darker retreats around the edges. Bright bare tanks can make them nervous. Strong flow can also push them away from their natural feeding zone near the upper and middle levels.
The photos attached to this listing show exactly the visual direction we want for the page: golden body colour, a lyre-shaped caudal fin, red spotting and planted-aquarium context. All four existing images have been kept. There is no borrowed source photo from another SKU, because every product must keep its own media identity.
| Area | Recommended choice | Why it helps |
|---|---|---|
| Lid | Tight cover glass or secure aquarium lid | Killifish are capable jumpers, especially when startled or exploring surface gaps |
| Filtration | Air-driven sponge filter or gentle internal filter | Keeps water stable without blasting the fish around the tank |
| Plants | Java moss, fine stems, floating plants and shaded edges | Gives cover, spawning sites and confidence |
| Hardscape | Bogwood, roots, leaf litter and smooth decor | Creates the darker soft-water look the species shows well in |
| Substrate | Dark sand or fine gravel | Improves contrast and avoids a harsh reflective base |
| Lighting | Moderate lighting diffused by plants | Supports plants without making the fish hide constantly |
Australe Lyretail Panchax should be treated as a soft-water fish. FishBase lists A. australe with a pH range around 6.0-7.0, hardness around 5-12 dH and a tropical temperature band around 21-24°C. Fishkeeper gives similar husbandry guidance, describing soft, slightly acidic water as best and recommending 20-24°C. That does not mean the fish collapses if a number moves slightly, but it does tell us the direction to aim for.
For a home aquarium, the best practical target is stable, clean, mature water. Avoid swinging pH, sudden hardness changes, uncycled tanks and high nitrate. If your tap water is very hard, mix with remineralised RO water only if you can do it consistently. A stable moderate setup is safer than chasing perfect numbers every week.
Temperature also deserves care. Many keepers run small tropical tanks too warm because the same aquarium also houses species that prefer 26-28°C. Gold Australes do better when they are not kept hot all year. A cooler tropical range supports appetite, lifespan and breeding condition without overdriving metabolism.
| pH | 6.0-7.0 ideal, with slightly acidic to neutral water preferred |
|---|---|
| Hardness | Soft to moderately soft; avoid very hard alkaline water |
| Temperature | 20-24°C for general maintenance |
| Flow | Low to moderate, with calm surface zones |
| Water changes | Small, regular changes using temperature-matched water |
| Maturity | Only add to a cycled aquarium with stable ammonia and nitrite at zero |
This species is a micro-predator. FishBase records worms, crustaceans and insects in the diet, which is a useful clue for aquarium feeding. In practice, small frozen foods such as daphnia, cyclops, baby brine shrimp, mosquito larvae and fine bloodworm-type foods are very useful. Good-quality small granules can be offered, but do not rely on dry food alone if you want the fish to look and behave at its best.
Feed small portions. These fish do not need heavy meals, and uneaten food can quickly spoil the quieter planted tanks they prefer. Watch the slower individuals. In a community tank, fast tetras, danios or greedy livebearers may take most of the food before the killifish settle enough to eat.
A varied diet improves body condition, colour and breeding readiness. The gold body colour should look clear and warm, not washed out. Good colour comes from genetics, low stress, stable water, mature plants, and a varied diet over time. It is not a quick-fix food trick.
Australe Lyretails are peaceful but not helpless. Males can display to one another, especially in small spaces, and they may claim favourite surface zones. The risk is usually not serious aggression; the bigger risk is stress from tank mates that are too fast, too large, too nippy or too pushy at feeding time.
Fishkeeper describes them as suitable for a specialist community, and that is the right phrase. Think of the tank as a calm soft-water community, not a mixed shop display. Suitable companions include small rasboras, quiet pencilfish, gentle small tetras, peaceful dwarf cichlids in carefully planned layouts, small Corydoras-style catfish where water parameters match, and peaceful shrimp only if you accept that tiny shrimplets may be eaten.
Avoid fin nippers, large gouramis, aggressive cichlids, fast danios in small tanks, large barbs, predatory fish and anything that turns feeding time into a scramble. Also avoid mixing several similar male killifish unless the tank is large, planted and planned around sight breaks.
| Choice | Verdict | Reason |
|---|---|---|
| Small rasboras and quiet tetras | Good with matching water needs | They usually leave the killifish space and feed without bullying |
| Pencilfish | Good in a calm planted tank | Similar quiet behaviour and soft-water preference |
| Small Corydoras-type catfish | Usually safe if parameters match | They use different areas of the tank and are not fin nippers |
| Shrimp | Possible with caution | Adult shrimp may be safe, but very small young can be eaten |
| Other male killifish | Plan carefully | Males can display and compete over the same zones |
| Large or nippy community fish | Avoid | They can damage fins, steal food and keep the killifish hidden |
A single male and female pair is a classic way to keep this fish. A trio of one male and two females can work well if the aquarium has enough cover and the females are not constantly chased. Larger groups need more space, sight breaks and observation. The goal is to let the male display without making one fish absorb all the attention.
If the listing is supplied as a pair, acclimate both fish slowly and keep the lights low at first. In a small aquarium, provide more plants than you think you need. Fine plants and floating roots are not just decoration; they are part of the stress-management system.
Do not judge behaviour in the first hour after arrival. Killifish can look subdued after transport. Given clean water, cover and quiet feeding, they usually settle and begin exploring the upper levels of the tank.
Aphyosemion australe is a non-annual killifish. That means the eggs do not require the same dry-storage method used for many annual killifish from temporary pools. Spawning usually happens among fine plants, moss, floating roots or spawning mops. Fishkeeper notes that eggs are often attached one at a time to mops or floating plants, and that a separate covered breeding aquarium can be used for controlled results.
For breeding, use very clean soft water, subdued light, a gentle sponge filter and dense spawning material. Condition adults with small live and frozen foods. Once eggs are present, some keepers remove them to a separate container, while others let heavily planted tanks produce occasional fry naturally. A dedicated breeding setup gives better survival because fry are tiny and need very small first foods.
Breeding is rewarding, but it should not be the first priority for a new arrival. Focus first on quarantine, feeding response, stable water and low stress. Once the fish are conditioned and settled, spawning behaviour becomes much easier to interpret.
| Spawning type | Non-annual plant or mop spawner |
|---|---|
| Best structure | Fine-leaved plants, moss, spawning mops and floating roots |
| Water | Soft, clean, slightly acidic and stable |
| Light | Subdued; avoid bright exposed breeding tanks |
| First foods | Infusoria-style foods first, then newly hatched brine shrimp as fry grow |
| Main risk | Fungal eggs, poor first foods, dirty rearing water and adult/fry predation in sparse tanks |
The four product images are all preserved. They show a gold-bodied lyretail-type fish in planted and clean side-view settings. Because no exact Petra or supplier source photo exists in the local media map for SKU 3010, no extra borrowed photo has been added. That is deliberate: sharing another SKU's image would make the catalogue less trustworthy even if the species is similar.
Use the images for body shape, colour direction and aquarium style. As with all live fish, individual markings, sex balance and fin extension can vary by shipment and maturity. Males normally show stronger colour and more elaborate finnage than females. Females are still valuable, especially if you want stable pair or trio behaviour.
When this SKU is available again, prepare the aquarium before ordering. The best arrival tank is already cycled, covered, gently filtered and planted. Dim the lights during acclimation. Float and acclimate carefully, then release the fish into a calm area rather than straight into a busy community feeding session.
Offer small foods after the fish have had time to settle. Do not panic if they ignore the first meal; transport and new surroundings can suppress feeding for a short time. The key is to keep the water clean, provide cover and avoid chasing them around the tank with nets or sudden maintenance.
Quarantine is always wise. Even healthy livestock benefits from a quiet observation period, and delicate fish show their true condition better when they are not competing with established tank mates.
Choose Australe Lyretail Panchax if you want a small, colourful, soft-water fish for a planted aquarium and you enjoy watching fine behaviour rather than only size or speed. It is a good fit for keepers who can maintain stable water, feed small foods and keep the aquarium covered.
Choose something else if your tank is hard and alkaline, very bright and bare, full of fast feeders, or warmer than this species should be kept long term. A fish can be beautiful and still be the wrong match for a particular aquarium.
For many keepers, the Gold Australe is exactly the right bridge between ordinary community fish and more specialist killifish keeping: colourful, manageable, breedable, but still deserving of a thoughtful setup.
A good Gold Australe aquarium starts with restraint. The fish is small, so it is easy to overfill the tank with equipment, hardscape and tank mates. A cleaner plan is usually better: one gentle filter, a reliable heater if the room is cool, a dark background, living plants, a few pieces of wood, and enough open water at the front for feeding and display.
Use the first week after setup to make sure the filter is mature and the tank is stable. This is more important than chasing a perfect aquascape photograph. Killifish often arrive in good condition and then lose confidence if the aquarium is too new, too bright or too busy. A mature planted tank with some biofilm, small micro-life and settled water gives them a much better start.
Floating plants are especially useful. They break the light, give surface security and reduce sudden reflections from the lid. If floating plants are not practical, use taller stem plants or broad leaves that reach the upper third of the tank. The fish should be able to move from open water into cover without crossing a bare, exposed area every time.
Leave a clear feeding lane. Many heavily planted tanks become so dense that small foods disappear into moss and roots before the fish have eaten properly. A small open area at the front, with cover just behind it, lets you check appetite, body shape and behaviour every day.
| Decision | Good choice | Avoid |
|---|---|---|
| Tank maturity | Cycled, planted and stable before livestock arrives | Adding to a new tank that has not finished cycling |
| Water movement | Gentle flow with calm surface spaces | Strong current across the full length of the tank |
| Light | Plant-friendly but diffused by cover | Bright exposed lighting with no shade |
| Maintenance | Small regular water changes | Large irregular swings in temperature, pH or hardness |
| Decor | Wood, moss, fine plants and leaf-litter style cover | Sharp decor, bare white gravel or an exposed open box |
Males normally carry the strongest colour and the most extended fins. In the gold form, males show a stronger orange-yellow body, red spotting and a clearer lyre shape in the tail. Females are usually smaller-looking, subtler and less extended in the fins. This difference is normal and should not be treated as a quality problem.
Display behaviour is one of the reasons people keep this species. A settled male may hold position near plants, turn side-on, flare the fins and move in short controlled bursts. In a calm tank this looks elegant. In a cramped tank with too few sight breaks it can become tiring for the female or subordinate fish, so layout matters as much as litre count.
If you keep a pair, make sure the female has places to rest out of the male's direct line of sight. If you keep a trio, watch that one female is not excluded from feeding. If you keep a larger group, plan it like a specialist aquarium rather than an add-on to a general community.
Do not mix up display with distress. Normal display is brief, colourful and controlled. Distress looks different: clamped fins, hiding constantly, heavy breathing, refusing food, scraping, jumping at the lid or being pinned in one corner. Those signs mean the environment or tank mates need to be reviewed.
The best time to prepare for this fish is before it is back in stock. Check that the lid has no gaps around pipework or cables. Test the aquarium water. Confirm that the filter is mature. Have small frozen foods ready. Turn bright lights down for the arrival period. These details reduce stress more reliably than any sales promise written on a page.
When live fish arrive, keep the room calm and avoid opening bags under harsh light. Match temperature carefully, then acclimate gradually to the receiving tank. The goal is not to keep the fish in the bag for as long as possible; the goal is to reduce sudden changes while moving them into clean, oxygenated, prepared water.
After release, leave the fish alone. Do not chase them for photos, move decor, or test every parameter repeatedly in a way that disturbs the tank. Watch from a distance. Offer a small first feed only once they have had time to orient themselves. If they ignore dry food, try a tiny portion of frozen daphnia or cyclops once the lights are lower.
For the first week, measure success by stability: normal breathing, gradual exploration, no jumping attempts, no bullying, and improving feeding response. Colour may deepen after they settle. New arrivals often look paler in the bag or in a bright quarantine tank.
Most problems with small killifish are not mysterious. They usually come from unsuitable tank mates, uncovered tanks, poor feeding access, unstable water, high temperature, or a tank that is too exposed. Because this species is small and quiet, problems can be missed until the fish is already thin or hiding.
Check body shape from above and from the side. A healthy fish should not look pinched behind the head. The fins should open cleanly when the fish is settled. The fish should be alert to food, but not forced to compete with much faster species. If it feeds once and then disappears for the rest of the day, review the layout and tank mates.
Fin damage can come from nipping, poor water or repeated jumping impacts. The first response should be to improve conditions and remove the cause, not only to medicate. Keep water clean, avoid rough decor and separate aggressive companions. If disease is suspected, treat in a controlled quarantine setup using medication appropriate for small soft-water fish.
Thinness is usually a feeding problem. Small killifish may not thrive if only large flakes or surface pellets are offered. Use tiny foods and observe each fish eating. In community tanks, feed in more than one spot so the boldest fish do not take everything.
| Symptom | Likely causes | First checks |
|---|---|---|
| Hiding all day | Bright tank, no cover, boisterous tank mates | Add floating cover, dim lighting, review companions |
| Jumping or hitting lid | Startle response, poor cover, chasing, open gaps | Secure the lid and reduce disturbance |
| Thin body | Food too large, tank mates stealing food, internal issue | Watch feeding and offer small frozen foods |
| Clamped fins | Stress, water quality, illness | Test ammonia, nitrite, nitrate, temperature and recent changes |
| Damaged fins | Nipping, rough decor, poor water, jumping impact | Remove cause, improve water and quarantine if needed |
A simple species tank can be the best choice: one pair or one male with two females in a planted aquarium with moss, floating plants and a sponge filter. This gives the fish space to display and gives the keeper the best chance of seeing natural behaviour. It is also the easiest route if breeding is part of the plan.
A calm community can work if the other fish are chosen around the killifish rather than added at random. Small rasboras, gentle tetras, pencilfish and bottom dwellers that enjoy similar water are better candidates than fast, competitive fish. The aquarium should still be covered and planted, and feeding should be watched carefully.
A display pair in a larger aquascape can be beautiful, but do not let the scale of the tank hide practical needs. Even in a larger aquarium, surface cover and low-stress feeding points are important. These fish spend a lot of time in the upper and middle layers, so the top of the aquascape matters as much as the substrate.
A breeding tank should be simpler and more controlled. Use soft water, a sponge filter, spawning mops or fine plants, low light and easy egg access. Avoid busy tank mates in a breeding setup. The adults can be conditioned well, spawned, then rested so females are not overworked.
This product naturally relates to searches for Australe Lyretail Panchax, Aphyosemion australe, Gold Australe Killifish, Gold Lyretail Killifish, Cape Lopez Lyretail, soft-water killifish, planted aquarium killifish and peaceful killifish. Those phrases belong in the copy when they help identify the fish or explain care. They do not need to be repeated in every heading, image alt or sentence.
Search engines and AI systems are better served by clear facts than by a list of repeated buyer phrases. The page therefore keeps the useful species terms, size, care and availability information while removing the old repetition. This should make the listing more readable for customers and more trustworthy for search systems that summarise pages.
The SERP title and description are also written as a real product result, not a keyword pile. Google may still choose its own snippet from the page, but a clear meta description gives it a better candidate: the exact fish, the scientific name, the care angle, photos and the Live Arrival Guarantee when livestock is available.
For related livestock, browse the killifish collection, compare with Amiet's Lyretail Killifish, or look at Hjerseni Lyretail Panchax for another Aphyosemion australe line.
A strong listing for this species should answer the questions a careful keeper actually has. It should not only say the fish is colourful. It should show the adult size, water style, temperament, food size, lid requirement, stock status, and the difference between the gold aquarium form and other killifish sold under similar names. That is why this repaired page keeps a full care guide instead of replacing the old text with a short sales paragraph.
It should also be honest about availability. Since SKU 3010 currently has zero Shopify inventory, the page should help customers plan and compare rather than pressure them with urgent ordering language. When stock returns, the same page can support purchasing because the care information, images, Product data and Live Arrival Guarantee context are already in place.
Finally, it should make visual sense. The image filenames already end with the SKU, the four existing images show the gold lyretail form, and the alt text now describes what is visible in each image. That gives customers and search systems a clearer connection between the fish, the page and the media without repeating the same keyword phrase across every field.
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