Care specifications
| Type | Crayfish |
|---|---|
| Difficulty | Easy |
| Max size | 2 in |
| Lifespan | 1–3 years |
| Temperature | 65–78 °F |
| pH | 7–8.2 |
| General hardness | 8–15 dGH |
| Calcium needs | High |
| Minimum tank size | 5 gallons |
| Diet | Detritus, Sinking pellets, Blanched vegetables, Frozen foods, Leaf litter |
| Roles | Scavenger, Showpiece |
| Plant safe | Yes |
| Betta compatible | With caution |
| Breeds in freshwater | Yes |
| Population growth | Slow |
| Temperament | Peaceful |
Get Dwarf Mexican Crayfish
Frequently asked questions
Will a dwarf crayfish kill my fish or shrimp?
Fish, no — it is too small and slow to catch anything healthy. Shrimp are mostly safe too, though a CPO may occasionally claw-grab a shrimplet or a freshly molted adult; in a high-value breeding colony that small risk matters, in a display tank it does not.
Why is my crayfish hiding and lying on its side?
It is molting — crayfish go still, sometimes on their side, shed the shell, and stay soft and vulnerable for a day or two. Do not 'rescue' it and leave the molt in the tank to be eaten for calcium. Losing a claw during molting is also normal; it regenerates over the next few molts.
Can I keep two dwarf crayfish together?
Yes, in pairs or groups with enough floor space and one cave per crayfish. Males spar over territory but injuries are rare when shelters outnumber animals. A pair will breed readily in freshwater, with the female carrying eggs under her tail for three to four weeks.
Dwarf Mexican Crayfish appears in
Plants that pair well with Dwarf Mexican Crayfish
Planting the same tank?
Browse the aquarium plant database — verified light, CO2, and height data for every species — or let the plant finder rank them against your exact setup.