Threadfin Rainbowfish

About the Threadfin Rainbowfish

Threadfin Rainbowfish (Iriatherina werneri) are small, peaceful freshwater fish known for their distinctive, long, thread-like fins on males, hence the name. They are also called Featherfin Rainbowfish due to these ornate fins. These fish are native to New Guinea and Australia, inhabiting slow-moving streams and swamps.

Husbandry & Care

Temperament: Peaceful

Minimum Tank Size: 20 Gallons

Water Temperature: 72-86 °F

Water pH: 5.0-8.0

Social Group: 6+ fish

Diet: Omnivorous; high-quality commercial flakes, live baby brine shrimp/daphnia, frozen brine shrimp/bloodworms.

Compatible with: Peaceful not fin-nipping aquarium fish such as Neon Tetras, Ember Tetras, Emerald Dwarf Rasboras, Celestial Pearl Danios, Amano Shrimp, Mystery Snails, Neocaridina Shrimp.