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Electric blue crayfish

Procambarus alleni
Blauer Floridakrebs B007.jpg
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Crustacea
Class: Malacostraca
Order: Decapoda
Family: Cambaridae
Genus: Procambarus
Subgenus: Leconticambarus
Species: P. alleni
Binomial name
Procambarus alleni
(Faxon, 1884) 

The blue crayfish (scientific name Procambarus alleni, sometimes called the electric blue crayfish, the sapphire crayfish, or the Florida crayfish) is a species of freshwater crayfish endemic to Florida in the United States. Its natural range is the area east of St. Johns River and all of Florida from Levy County and Marion County southwards, as well as on some of the Florida Keys. It is included on the IUCN Red List as a species of Least Concern. The blue crayfish is frequently kept in freshwater aquaria. In the wild, this species varies from brown-tan to blue, but the aquarium strain has been selective bred to achieve a brilliant cobalt blue color.

It should not be confused with the burrowing Cambarus monongalensis, also known as the blue crayfish, but native to Pennsylvania, Virginia and West Virginia.

Pregnant mother cradling eggs inside her tail

Female dwelling in a small cave

Male dwelling in a small cave



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