Can Redline Rasbora and Trout Cichlid (Champsochromis) Live Together?

Redline Rasbora is a peaceful species (1/10), while Trout Cichlid (Champsochromis) is semi-aggressive (7/10). This notable difference means Trout Cichlid (Champsochromis) may occasionally assert dominance over Redline Rasbora.

Large aggression gap (6 points) between Redline Rasbora and Trout Cichlid (Champsochromis) increases stress risk for the more peaceful fish.

Redline Rasbora and Trout Cichlid (Champsochromis) 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.

Additional behavioural considerations to keep in mind: Hyperactive swimmers can stress shy, slow-moving species through constant motion.

Worth noting: Redline Rasbora is a known jumper, so a tight-fitting lid is essential.

The safe temperature window for both species falls between 24°C and 27°C. Aim for the midpoint of this range (around 25.5°C) for optimal comfort.

The pH requirements of Redline Rasbora (4–6.8) and Trout Cichlid (Champsochromis) (7.8–8.6) do not overlap, making it impossible to satisfy both species simultaneously.

Hardness requirements are incompatible: Redline Rasbora needs 1–8 dGH while Trout Cichlid (Champsochromis) requires 10–25 dGH.

To house Redline Rasbora and Trout Cichlid (Champsochromis) together, plan for an aquarium of at least 500 litres with a minimum length of 180 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: Leaf Litter/Blackwater, Driftwood (Digestion/Hiding), Plants - Densely covered, Plants - Floating, Sand (Sifters). Meeting these requirements will help both species thrive.

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

Redline Rasbora and Trout Cichlid (Champsochromis) 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.