Can Black-Banded Rainbowfish and Norman's Lampeye Killifish Live Together?

Black-Banded Rainbowfish is a peaceful species (2/10), while Norman's Lampeye Killifish is peaceful (1/10). This modest difference means Black-Banded Rainbowfish may occasionally assert dominance over Norman's Lampeye Killifish.

Black-Banded Rainbowfish and Norman's Lampeye Killifish 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: Black-Banded Rainbowfish is a known jumper, so a tight-fitting lid is essential.

The safe temperature window for both species falls between 22°C and 28°C. Aim for the midpoint of this range (around 25.0°C) for optimal comfort.

Both fish can tolerate a pH between 6.5 and 7.5. Maintaining a stable value within this band is more important than hitting an exact number.

For general hardness, the shared comfort zone is 4–15 dGH. Regular testing will ensure conditions stay within this range.

To house Black-Banded Rainbowfish and Norman's Lampeye Killifish together, plan for an aquarium of at least 100 litres with a minimum length of 80 cm. This recommendation combines the stricter species minimums with a community-load allowance so the pairing has realistic long-term space and filtration headroom.

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 - Densely covered, Plants - Floating. 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.