Canadian Bred Blue Dwarf Crayfish (Cambarellus diminutus)

Overview: The Blue Dwarf Crayfish (Cambarellus diminutus) is a small, peaceful species that thrives in nano aquariums. Bred in Canada, these crayfish are a fascinating addition to any tank, with colors ranging from blueish to brownish, and they tend to become more blue as they mature. With a maximum size of just 1 inch, they are one of the smallest crayfish species available, making them perfect for tanks as small as 6 gallons. Their gentle temperament makes them compatible with most fish and similarly-sized invertebrates, though they may show some territorial behavior toward each other.

This dwarf crayfish is an excellent scavenger and will help keep the tank clean by feeding on detritus and leftover food. They are active during the day and, unlike larger crayfish, they don’t typically hide. Their small size and peaceful nature make them an ideal choice for anyone looking to introduce invertebrates to a community tank.

What We Like About This Crayfish:

• Small, manageable size for nano tanks

• Coloration becomes more blue with age

• Extremely peaceful and compatible with most tankmates

• Excellent scavenger

Recommended Tank Parameters:

• Temperature: 75 – 80°F (24 – 27°C)

• pH: 6.8 – 7.8

• Ammonia: 0 ppm

• Nitrite: 0 ppm

• Nitrate: <30 ppm

• Minimum Tank Size: 6 gallons

Care Information:

• Diet: Omnivorous; feeds on invertebrates, detritus, and accepts frozen and prepared foods. Cuttlebone or calcium supplements may aid in exoskeleton development.

• Social Behavior: Extremely peaceful and safe with most fish and similarly-sized invertebrates. May become territorial with its own kind, so extra space or hiding spots are recommended when keeping multiple crayfish together.

• Origin: Tank-bred in Canada

• Average Adult Size: 1 inch (2.5 cm)

• Average Purchase Size: 0.5 – 0.75 inch (1.3 – 1.9 cm)

• Recommended Tank Mates: Safe with most peaceful fish and invertebrates like shrimp, snails, and small tetras. Avoid keeping them with aggressive or large fish species.