Glassfish Sailfin, also known as Ambassis agrammus, is a peaceful Australian native fish with a mostly transparent body and delicate fins. Found across northern Australia, this unusual species is an interesting addition to a peaceful freshwater aquarium. Its clear appearance and active nature make it especially appealing when kept in a group with plenty of plants and open swimming space.
A minimum aquarium size of 80 litres is recommended for a small group of Glassfish Sailfin. A longer aquarium is ideal as it provides plenty of room for swimming. A larger aquarium is recommended for bigger groups or when keeping them with other community fish.
Glassfish Sailfin are peaceful and should be kept with other calm fish of a similar size.
Avoid aggressive or much larger fish that may chase or eat them.
Feed a quality small tropical fish food, including small pellets or flakes. They also enjoy frozen or live foods such as brine shrimp, daphnia and bloodworms. Feed small amounts once or twice daily and avoid overfeeding.
Use a reliable filter that keeps the water clean while providing gentle water movement. Regular water changes will help maintain healthy water conditions.
Plants provide cover and help Glassfish Sailfin feel secure. Use taller plants, smaller plants and floating plants while leaving plenty of open swimming space.
Moderate lighting works well. Floating plants can provide shaded areas and help create a comfortable environment.
Maintain a stable temperature of around 24–28°C. A reliable heater can help prevent sudden temperature changes.
Fine sand or smooth gravel are suitable choices. A darker substrate can create an attractive contrast against the fish's transparent body.
Use smooth wood, rocks and plants to create sheltered areas. Leave plenty of open water for swimming and avoid sharp decorations.