Long Fin Bitterling – Elegant Freshwater Stream Dweller

The Long Fin Bitterling is a graceful freshwater fish known for its beautifully elongated dorsal and anal fins, giving it an elegant flowing appearance. Native to East Asian rivers and streams, this peaceful species is highly prized in planted aquariums for its delicate fins and subtle coloration. It shares the fascinating reproductive behavior typical of bitterlings, laying eggs inside freshwater mussels where the young develop safely.

Features

• Size: Typically 5–7 cm in length.

• Origin: Clear streams and rivers of East Asia.

• Appearance: Long, flowing dorsal and anal fins that enhance its swimming elegance.

• Behavior: Peaceful, shoaling species best kept in groups.

Care Instructions

• Tank Setup: Planted aquarium with hiding spots and gentle water flow to simulate natural habitat.

• Water Parameters: Temperature 18–24 °C, pH 6.5–7.5, soft to moderately hard water.

• Social Needs: Keep in groups of 6+ to promote natural behavior and reduce stress.

• Breeding: Requires freshwater mussels for egg laying; females deposit eggs inside mussel gills.