Werneri Threadfin Rainbow - Iriatherina werneri Pairs.

Werneri - Threadfin Rainbows are a type of fish that are native to Papua New Guinea. The threadfin rainbowfish or featherfin rainbowfish (Iriatherina werneri) is a rainbowfish, the only species in the genus Iriatherina. It is characterized by long beautiful fins, and is among the most attractive of the rainbowfishes.

Feeding

Threadfin Rainbows require a diet designed for their small mouths, with high-quality micro-pellets as the main food source. Enhance their nutrition by offering live or frozen options such as daphnia, baby brine shrimp, and microworms. Providing smaller, frequent feedings allows them to eat with ease. A protein-rich and diverse diet helps maintain their bright coloration, active behavior, and overall wellbeing.

Ideal Tank Mates

These peaceful fish thrive alongside other gentle species such as small tetras, rasboras, and dwarf corydoras. It is important to avoid larger or aggressive fish that could outcompete them or harm their delicate fins. Maintaining a group of at least six Threadfin Rainbows promotes natural shoaling behavior, creating lively movement within the aquarium. A carefully selected community setup supports their calm nature and encourages harmonious interactions.

Fun Facts

• Species: Iriatherina werneri
• Common Name: Werneri Threadfin Rainbow
• Origin: Australia, Papua New Guinea
• Diet: Omnivore
• PH Range: 6.0–7.5
• Temperature: 24°C–28°C
• Max Size: Up to 5 cm
• Tank Size: Minimum 50 liters