Threadfin / Featherfin Rainbowfish (Iriatherina werneri)

Threadfin Rainbowfish (Iriatherina werneri), also known as the Featherfin Rainbowfish, is a stunning and delicate species popular among aquarium enthusiasts

Appearance

• Size: Typically grows to about 1.2 – 1.6 inches (3 – 4 cm).
• Coloration: Males display vibrant colors and elongated fins, while females are more subdued.

Habitat

• Distribution: Native to tropical Australia and Papua New Guinea.
• Environment: Prefers slow-moving streams, freshwater swamps, lagoons, and billabongs with clear water and abundant vegetation.

Aquarium Care

• Tank Size: Minimum of 15 gallons (60 liters).
• Water Conditions:
  • Temperature: 75 – 82°F (24 – 28°C).
  • pH: 6.0 – 7.0.
  • Hardness: 7 – 19 dGH.

• Décor: Best kept in a densely planted tank with floating plants and driftwood to diffuse light.

Diet

• Omnivorous: Enjoys small live foods, such as brine shrimp and daphnia, along with high-quality flakes and pellets.

Behavior and Compatibility

• Peaceful: Ideal for community tanks with other small, non-aggressive fish.
• Active Swimmers: Males often display to each other and to females, creating a dynamic and visually appealing environment.

Breeding

• Spawning: Takes place during warmer months; males establish territories and display to attract females.
• Eggs: Laid among fine-leaved plants; adding aquatic moss can help protect the eggs.