Threaded Fin Dwarf Rainbow Fish
The male Threadfin Rainbowfish (scientific name: Iriatherina Werneri) highlights itself with the very long elaborate rear fins and is a welcomed inhabitant in any community aquarium, especially in planted setups.
Native to densely planted rivers and streams in New Guinea and Australia, this species thrives in slow-moving waters with warm temperatures and soft, slightly acidic water. It prefers mature aquariums with low current and stable conditions. The peaceful fish typically inhabits the middle to upper levels of the tank and is known to jump occasionally. To prevent escape, ensure the tank has a secure lid.
Key Features
| Species | Threadfin Rainbowfish (Iriatherina Werneri) |
|---|---|
| Habitat | Densely planted rivers and streams in New Guinea and Australia |
| Water Conditions | Warm, soft, slightly acidic |
| Behavior | Peaceful, mid-to-upper level swimmer, occasional jumping |
| Compatibility | Best with calm, non-aggressive species |
FAQ
What is the ideal water temperature for Threaded Fin Dwarf Rainbow Fish?
The ideal water temperature ranges from 24°C to 28°C (75°F to 82°F).
Do Threaded Fin Rainbow Fish need a lid on the tank?
Yes, they are known to jump occasionally, so a secure lid is recommended to prevent escape.
Can Threaded Fin Rainbow Fish live with other fish species?
They are peaceful and best kept with calm, non-aggressive species in a well-planted aquarium.
Yvonne Greene –
The fish is beautiful with its long, flowing fins. It’s peaceful and stays in the middle of the tank. I’ve kept it for three months and it’s thriving in my planted aquarium. Just make sure the tank has a lid.
Kevin Ellison –
A striking addition to my community tank. The male shows off its fins beautifully. Water conditions are stable and the fish is active without being aggressive.
Lucas Howard –
Perfect for a beginner-friendly planted tank. It doesn’t stress other fish and stays calm. Only issue is it jumps once or twice a week, so a lid is essential.