Can Loricaria lundbergi and Rummynose Rasbora Live Together?

Loricaria lundbergi is a peaceful species (1/10), while Rummynose Rasbora is peaceful (2/10). This modest difference means Rummynose Rasbora may occasionally assert dominance over Loricaria lundbergi.

In terms of spatial distribution, Loricaria lundbergi prefers the Bottom (Substrate) zone, whereas Rummynose Rasbora occupies the Middle (Open Water) zone. Because they use different levels of the water column, territorial disputes are less likely and the tank will appear more balanced.

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

Worth noting: Loricaria lundbergi is nocturnal and will be most active after lights-out, naturally reducing daytime encounters.

The safe temperature window for both species falls between 25°C and 25°C. Aim for the midpoint of this range (around 25.0°C) for optimal comfort.

The pH requirements of Loricaria lundbergi (5–7) and Rummynose Rasbora (7.3–8.5) do not overlap, making it impossible to satisfy both species simultaneously.

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

To house Loricaria lundbergi and Rummynose Rasbora together, plan for an aquarium of at least 110 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: Sand (Sifters), Driftwood (Digestion/Hiding), Leaf Litter/Blackwater, 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.

Loricaria lundbergi and Rummynose Rasbora 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.