Threadfin Rainbowfish

The Threadfin Rainbowfish (Iriatherina werneri) is a thin, elongated freshwater fish with flowing fins and iridescent colors. The male's dorsal, anal, and caudal fins are longer, while the female has shorter and less vibrant fins. They are elegant, dainty swimmers who add an interesting element to planted tanks.

Threadfin Rainbowfish are a peaceful shoal fish that must be acclimated to calm water. Fin-nipping, they demand a calm environment with mild water and inoffensive tankmates and are thus best left to more advanced aquarists.

Origin of the Threadfin Rainbowfish

Threadfin Rainbowfish naturally occur in Northern Australia, Papua New Guinea, and surrounding islands. They are found in slow streams, swamps, and floodplains that have heavy cover under natural conditions. They naturally occur under natural conditions consuming small insects, larvae, and algae. Due to their hardness, they are simple to take care of in aquarium settings if only feeding and water parameters are maintained in control.

Temperament of the Threadfin Rainbowfish

Threadfin Rainbowfish are non-aggressive and peaceful. They are highly social and display peaceful schooling behavior. They chase to some degree at spawning during courtship, but they never harass other fishes except occasionally. Best if kept in 6 or more to minimize stress and promote natural activity.

Threadfin Rainbowfish Compatibility with Other Fish

Threadfin Rainbowfish peacefully coexist with:

1. Small rasboras, tetras, danios
2. Corydoras and catfish peaceful species
3. Other calm rainbowfish varieties

Avoid:

1. Bull, fin-nipping, or large fish
2. Rowdy or territorial species that'll stress them out

Threadfin Rainbowfish Price Range

Threadfin Rainbowfish are cheap as they're delicate. Price is ₹500–₹1,500 ($6–$20) each, subject to size, color, and age. Long-finned males with flowing fins are slightly more expensive.