Lyretail Killifish (Aphyosemion australe)
Add vibrant colour and graceful elegance to your aquarium with the stunning Lyretail Killifish. One of the most popular killifish species in the hobby, this beautiful fish is renowned for its vivid orange-gold body, striking markings, and distinctive lyre-shaped tail fin. Peaceful and relatively easy to care for, it is an excellent choice for aquarists looking to keep something a little different from the usual community fish.
With their bright colours and gentle nature, Lyretail Killifish make a captivating addition to well-planted aquariums.
🌿 Why Choose Lyretail Killifish?
🧡 Brilliant orange and gold coloration
🎨 Beautiful markings and iridescent highlights
🎋 Distinctive lyre-shaped tail fin in mature males
🌱 Perfect for planted and natural-style aquariums
⭐ One of the easiest and most popular killifish species to keep
Lyretail Killifish spend much of their time exploring the upper and middle areas of the aquarium, displaying their vibrant colours and elegant finnage.
📏 Care Requirements
🧬 Scientific Name: Aphyosemion australe
📛 Common Name: Lyretail Killifish
🏠 Tank Size: 45L+ recommended
📏 Adult Size: Up to 6cm
🌡️ Temperature: 20–25°C
⚗️ pH Range: 6.0–7.5
🧘 Temperament: Peaceful
🍽️ Diet: High-quality flakes, micro pellets, frozen foods, and live foods
👥 Group Size: Pair, trio, or small group
Lyretail Killifish thrive in mature aquariums with plenty of plants, subdued lighting, and calm water movement. Floating plants are particularly appreciated as they help create a more natural and secure environment.
🐠 Compatibility
Suitable for peaceful community aquariums with similarly sized, non-aggressive species. They mix well with small rasboras, peaceful tetras, Corydoras, shrimp, and other gentle tank mates. Avoid boisterous or fin-nipping fish that may stress them.
Important Notes
Lyretail Killifish are excellent jumpers, so a tightly fitting lid is essential. Males display the brightest colours and most impressive finnage, while females are generally smaller and less colourful. A varied diet rich in frozen and live foods will help maintain their health and colouration.
The Lyretail Killifish is a fantastic choice for UK aquarists looking for a colourful, peaceful, and elegant fish that brings beauty, personality, and unique charm to planted freshwater aquariums.
