Can Mexican Dwarf Crayfish (CPO) and Tinfoil Barb Live Together?

Mexican Dwarf Crayfish (CPO) is a generally mild-mannered species (4/10), while Tinfoil Barb is generally mild-mannered (3/10). This modest difference means Mexican Dwarf Crayfish (CPO) may occasionally assert dominance over Tinfoil Barb.

Mexican Dwarf Crayfish (CPO) and Tinfoil Barb 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.

Worth noting: Tinfoil Barb is a known jumper, so a tight-fitting lid is essential.

The safe temperature window for both species falls between 22°C and 25°C. Aim for the midpoint of this range (around 23.5°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 6–15 dGH. Regular testing will ensure conditions stay within this range. An aquarium test kit is recommended for monitoring.

To house Mexican Dwarf Crayfish (CPO) and Tinfoil Barb together, plan for an aquarium of at least 816 litres with a minimum length of 180 cm. This accounts for the larger species' space requirements with an additional 20 % buffer to reduce territorial tension.

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, Smooth Gravel (Sensitive Barbels). Meeting these requirements will help both species thrive.

Mexican Dwarf Crayfish (CPO) prefers Low (Still Water) flow while Tinfoil Barb needs High (River/Stream) flow. Consider positioning filter outlets and using baffles to create zones of different current intensity within the same tank.