Featherfin Rainbowfish

Threadfin Rainbowfish for Sale (Iriatherina werneri)
The Threadfin Rainbowfish is a delicate, elegant species prized for its long, flowing fins and shimmering silver-gold body with subtle blue and red highlights. Males are especially striking, displaying extended, thread-like fins that ripple gracefully as they swim.

Native to slow-moving streams and swamps of northern Australia and New Guinea, this peaceful rainbowfish is perfect for planted community aquariums. Best kept in groups, they display their finest colours and natural schooling behaviour when given plenty of swimming space and fine-leaved plants.

Key Features:

• Stunning rainbowfish with long, thread-like fins

• Peaceful, shoaling species ideal for planted aquariums

• Best kept in groups of 6+ for full effect

• Small and elegant, perfect for nano and community setups

Care Information:

• Temperament: Peaceful, shoaling

• Tank Size: 60L+

• Diet: High-quality flakes, micro-pellets, and small frozen/live foods

• Water Parameters: 24–28°C, pH 6.0–7.5

• Adult Size: Up to 5cm

The Threadfin Rainbowfish adds movement, colour, and refinement to any aquarium — a must-have for aquarists who love graceful, peaceful fish.