CPO Dwarf Crayfish

Cambarellus patzcuarensis

CPO

Mexican dwarf crayfish. Named after Lake Patzcuaro in Michoacan. Bred in North Carolina.

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The species

About CPO

Cambarellus patzcuarensis. One of the most popular dwarf crayfish in the hobby. Small, hardy, and active. Max size around 1.6 inches.

Originally from central Mexico. The "orange" in CPO refers to the orange color form that's most common in the hobby, but they can also appear in brown, tan, and mixed tones.

Same care as any other Cambarellus. Same water, same food, same tank requirements. Peaceful enough for community tanks with small fish and shrimp.

Care guide →
CPO detail
CPO detail
CPO detail
Fall 2026

Not available yet

We're building up our CPO colony. When we have enough healthy stock to sell, they'll show up on the shop page. Pricing will be the same as Brazos dark and light, starting at $14 each for a pack of 10.

Quick reference

SpeciesCambarellus patzcuarensis
Common nameCPO / Mexican Dwarf Crayfish
Max size~1.6 inches
Temp60 to 80 F
pH6.5 to 8.0
GH6 to 12
TemperamentPeaceful
Lifespan1.5 to 2 years
Min tank5 gallons

Good to know

Hardy and tolerant of a wide range of conditions. Good beginner species.

Active during the day. You'll see them out and about more than some other dwarf crayfish.

Compatible with the same tank mates as Brazos: small fish, shrimp, snails.

Full care guide →

While you wait, check out what's available now.

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