Can Cardinal Shrimp (Sulawesi) and Neolamprologus Pulcher Live Together?

Cardinal Shrimp (Sulawesi) is a peaceful species (0/10), while Neolamprologus Pulcher is semi-aggressive (7/10). This notable difference means Neolamprologus Pulcher may occasionally assert dominance over Cardinal Shrimp (Sulawesi).

Large aggression gap (7 points) between Cardinal Shrimp (Sulawesi) and Neolamprologus Pulcher increases stress risk for the more peaceful fish.

Cardinal Shrimp (Sulawesi) and Neolamprologus Pulcher both frequent the Bottom (Substrate) 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: Aggressive fish may bully and stress shy, slow-moving species. Shrimp eaters may also prey on very small nano fish.

The safe temperature window for both species falls between 26°C and 27°C. Aim for the midpoint of this range (around 26.5°C) for optimal comfort.

Both fish can tolerate a pH between 8 and 8.5. Maintaining a stable value within this band is more important than hitting an exact number.

Hardness requirements are incompatible: Cardinal Shrimp (Sulawesi) needs 4–8 dGH while Neolamprologus Pulcher requires 10–25 dGH.

To house Cardinal Shrimp (Sulawesi) and Neolamprologus Pulcher together, plan for an aquarium of at least 75 litres with a minimum length of 60 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: Established Algae (Otocinclus), Smooth Gravel (Sensitive Barbels), 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.

Cardinal Shrimp (Sulawesi) and Neolamprologus Pulcher 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.

Feeding time deserves special attention with this pairing. Neolamprologus Pulcher is a known shrimp eater and may prey on small invertebrates or nano fish like Cardinal Shrimp (Sulawesi).