Can Clown Loach and Cyprichromis Leptosoma Live Together?

Clown Loach is a peaceful species (2/10), while Cyprichromis Leptosoma is generally mild-mannered (3/10). This modest difference means Cyprichromis Leptosoma may occasionally assert dominance over Clown Loach.

In terms of spatial distribution, Clown Loach prefers the Bottom (Substrate) zone, whereas Cyprichromis Leptosoma occupies the Top (Surface) and Middle (Open Water) zones. Because they use different levels of the water column, territorial disputes are less likely and the tank will appear more balanced.

Worth noting: Clown Loach is nocturnal and will be most active after lights-out, naturally reducing daytime encounters. Also, Cyprichromis Leptosoma is a known jumper, so a tight-fitting lid is essential.

The safe temperature window for both species falls between 25°C and 28°C. Aim for the midpoint of this range (around 26.5°C) for optimal comfort.

The pH requirements of Clown Loach (6–7.5) and Cyprichromis Leptosoma (8–9) do not overlap, making it impossible to satisfy both species simultaneously.

For general hardness, the shared comfort zone is 8–12 dGH. Regular testing will ensure conditions stay within this range.

To house Clown Loach and Cyprichromis Leptosoma together, plan for an aquarium of at least 500 litres with a minimum length of 150 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: Sand (Sifters), Smooth Gravel (Sensitive Barbels), Driftwood (Digestion/Hiding). 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.

Clown Loach and Cyprichromis Leptosoma are the kind of pair that can look acceptable in a shop but become a maintenance problem at home. The main risk is not a single number in the chart; it is the way incompatible behavior, water needs, or pressure on space compounds over time once both fish are established in the same tank.