Lyretail Killifish — Fish Profile
Aphyosemion australe
Quick Specs
| Adult Size: | 2.5" |
| Temperament: | peaceful |
| Care Level: | intermediate |
| Min Tank Size: | 10 gallons |
| Temperature: | 72-77°F |
| pH Range: | 6.0-7.0 |
| Diet: | carnivore |
| Origin: | West Africa (Angola, Gabon) |
| Lifespan: | 2-3 years |
Overview
Lyretail Killifish are strikingly colorful freshwater fish with males displaying vivid orange, red, and yellow lyre-shaped fins. They are one of the few killifish species suited to community tanks. They prefer soft, slightly acidic water and densely planted tanks. Their eggs can be spawned in peat or mops, making them a favorite among dedicated breeders.
Care Guide for Lyretail Killifish
Tank Setup
Lyretail Killifish requires a minimum tank size of 10 gallons. Maintain water temperature between 72°F and 77°F, with a pH range of 6.0 to 7.0. A properly sized tank with adequate filtration and regular water changes is essential for long-term health. When housing Lyretail Killifish with other species, always choose a tank size that accommodates the most demanding fish in the community.
Feeding
Lyretail Killifish is a carnivore feeder. Provide a varied diet appropriate for carnivore species to ensure optimal health and coloration. Feed small portions 2–3 times daily, and remove uneaten food after a few minutes to maintain water quality.
Temperament & Compatibility
This species is classified as peaceful. Lyretail Killifish reaches an adult size of 2.5 inches and has a care level of intermediate. Always research compatibility before adding new fish to an established aquarium. Individual temperament can vary, so monitor new introductions closely for the first 48 hours.
Origin & Lifespan
Lyretail Killifish originates from West Africa (Angola, Gabon) and has an expected lifespan of 2-3 years when kept in proper water conditions with appropriate tank mates and diet.
Compatible Tank Mates
🟢 Good Tank Mates
🟡 Caution Tank Mates
🔴 Risky Tank Mates
Compatibility Results for Lyretail Killifish
All 69 compatibility checks involving Lyretail Killifish:
Recommended for Lyretail Killifish
Hikari Frozen Bloodworms — $9.99Frozen bloodworms for carnivorous killifish
Expert Care Tips for Lyretail Killifish
- Nano tank suitable: Lyretail Killifish can thrive in smaller tanks (10+ gal), but skip the bowl — even small fish need filtration and a heater.
- Tropical range: Keep Lyretail Killifish at 72–77°F. A 50W heater per 10 gallons is a safe rule of thumb for stable temperature.
- Narrow pH tolerance: Lyretail Killifish only tolerates pH 6.0–7.0. Test your tap water before buying — adjusting pH is harder than choosing the right fish for your water.
- Peaceful community fish: Lyretail Killifish works well in community tanks. Still, avoid housing with fish large enough to eat them — a 2.5" fish is vulnerable to anything with a mouth bigger than 2×.
- Acclimation: Always drip-acclimate Lyretail Killifish over 30–45 minutes. Match temperature and pH gradually to prevent osmotic shock.