Blue Dwarf Mexican Crayfish

This small blue crayfish brings close-up interest to the aquarium floor as it explores leaves, wood, and sheltered corners. It is sold as Blue Dwarf Mexican Crayfish, a trade name that should be checked against the current stock before assuming a particular Cambarellus species.

Animal details

• Scientific name: Cambarellus sp.; exact species has not been specified
• Size offered: 2 cm
• Adult size: A dwarf crayfish measuring a few centimeters; the exact adult limit depends on species
• Origin: North American dwarf-crayfish group; exact stock locality is unconfirmed
• Water type: Freshwater
• Temperament: Relatively mild for a crayfish, but still opportunistic and territorial

Recommended aquarium conditions

• Aquarium: 10 US gallons or larger for one, with extra floor space and shelters for additional animals
• Temperature: 20–24°C (68–75°F) as a general dwarf-crayfish target
• pH: 6.5–8.0; use stable, adequately mineralized water

Provide small caves, leaf litter, and several narrow retreats that a molting crayfish can occupy alone. A planted layout with broken lines of sight helps reduce contact between animals. Cover the aquarium securely, including openings around filter tubing.

Diet and feeding

Feed small sinking crustacean pellets and vary them with algae-based foods, softened vegetables, and occasional small meaty items. Deliver food near its hiding place and remove excess. Do not expect a crayfish to live on fish waste or leftovers alone.

Compatibility and care

Avoid large predatory fish, aggressive bottom dwellers, and valuable shrimp-breeding colonies. Tiny shrimp, snails, or slow animals can still be grabbed. Keep the aquarium cycled and leave a newly molted animal undisturbed while its shell hardens. Use only treatments appropriate for invertebrates. Ask us to confirm the current species if an exact adult size or specialized water range is important to your setup.

Sizes are approximate. Contact Las Vegas Exotic Fish at (702) 685-5100 to confirm availability or discuss your setup.