Can Boeseman's Rainbowfish and Turquoise Rainbowfish Live Together?

Both Boeseman's Rainbowfish and Turquoise Rainbowfish are peaceful species with an aggression score of 2/10. Their matching temperaments mean neither fish is likely to dominate the other in a shared aquarium.

Boeseman's Rainbowfish and Turquoise Rainbowfish both frequent the Top (Surface) and Middle (Open Water) region of the setup. This overlap can increase competition for space, so providing ample room and cover is important to keep both species comfortable.

Worth noting: Boeseman's Rainbowfish is a known jumper, so a tight-fitting lid is essential.

There is no temperature overlap between Boeseman's Rainbowfish (26–30°C) and Turquoise Rainbowfish (20–25°C). This fundamental mismatch makes long-term cohabitation impractical.

Both fish can tolerate a pH between 7 and 8.1. Maintaining a stable value within this band is more important than hitting an exact number.

For general hardness, the shared comfort zone is 10–19 dGH. Regular testing will ensure conditions stay within this range.

To house Boeseman's Rainbowfish and Turquoise Rainbowfish together, plan for an aquarium of at least 240 litres with a minimum length of 120 cm. This accounts for the larger species' space requirements with an additional 20 % buffer to reduce territorial tension.

Providing a mix of open swimming space and sheltered areas with rocks, driftwood, or plants will keep both species comfortable and allow natural behaviour.

Specific environmental needs for this combination include: Plants - lighly covered, Plants - Densely covered. Meeting these requirements will help both species thrive.

Both species do well with moderate (standard) water movement, so a standard filtration setup rated for the tank volume should suffice.