Threadfin Rainbowfish (Iriatherina Werneri)

Iriatherina werneri (Threadfin Rainbowfish)

Iriatherina werneri, commonly known as the Threadfin Rainbowfish, is a delicate and elegant species admired for its graceful appearance and flowing finnage. Mature males develop spectacular elongated fins adorned with fine filament-like extensions, creating a mesmerizing display as they glide through the aquarium.

Despite their refined appearance, Threadfin Rainbowfish are peaceful schooling fish that thrive in well-planted aquariums with gentle water flow. Their subtle iridescent body coloration, combined with their distinctive fins, makes them a favorite among aquascapers and nano aquarium enthusiasts.

Key Features:

- Beautiful elongated fins with thread-like extensions

- Peaceful schooling fish ideal for planted aquariums

- Elegant display behavior, especially among mature males

- Perfect for nature-style and aquascaped tanks

- Highly sought after by Rainbowfish enthusiasts

Care Level: Easy to Moderate

Temperament: Peaceful

Adult Size: Up to 4–5 cm

Diet: Omnivore – accepts fine pellets, flakes, frozen foods, and live foods

Water Temperature: 24–30°C

pH: 6.0–7.5

With its graceful finnage, peaceful temperament, and unique beauty, Iriatherina werneri is an exceptional choice for aquarists seeking a truly elegant centerpiece for a planted freshwater aquarium.