Electric Blue Crayfish

Procambarus alleni

Also known as Florida Crayfish, Everglades Crayfish, Blue Crayfish

Animalia›Arthropoda›Malacostraca›Decapoda›Cambaridae

The Electric Blue Crayfish is a striking freshwater invertebrate prized for its vibrant cobalt-blue coloration and active personality. Native to Florida, this species is hardy and relatively easy to care for, making it suitable for intermediate aquarists. They are solitary, territorial creatures that require adequate hiding spaces and will consume most foods offered in the aquarium.

Where it's from

Recorded as introduced in Ecuador and Norway

At a glance

Size: 5.5 in; 14 cm
Min tank: 20 gal; 76 L
Temp: 68–79°F; 20–26°C
pH: 6.5-8.0
GH: 107–268 ppm; 6–15 dGH
Temperament: Aggressive
Swims: Bottom
Lifespan: 5-7 yrs

Ammonia 0 ppm and nitrate under 20 ppm.

Care

Diet

Electric Blue Crayfish are opportunistic omnivores that consume algae wafers, blanched vegetables (zucchini, spinach), sinking pellets, and biofilm. They will scavenge detritus and dead plant matter. Feed small portions 2-3 times weekly, removing uneaten food after 24 hours to maintain water quality.

Behavior

These crayfish are nocturnal and highly territorial, spending most of the day hidden in caves or under decorations. They are active foragers at night and will readily consume plant matter and small organisms. Molting occurs every 4-8 weeks; provide plenty of hiding spots during this vulnerable period. They are escape artists and require a secure, fitted tank lid.

Breeding

Breeding in captivity is possible but challenging. Females produce eggs that are carried under the tail for 3-4 weeks before hatching into miniature crayfish. Larvae are cannibalistic and require separation or dense vegetation for survival. Most hobbyists do not attempt breeding due to the difficulty of raising juveniles.

Tank mates

See all 6

Pellia Moss

Provides hiding cover and biofilm; crayfish may uproot but won't harm the plant significantly

good

Java Moss

Dense moss offers shelter and biofilm; hardy enough to withstand crayfish disturbance

good

Anubias Nana

Sturdy plant that crayfish cannot easily damage; provides hiding spots

good

Marimo Moss Ball

Durable decoration that crayfish will not destroy; adds aesthetic appeal

good

Nerite Snail

Crayfish may prey on snails if hungry; only compatible in large tanks with abundant food

caution

No state or federal restrictions on record.

Not legal advice, and possibly incomplete or out of date. Rules vary by state and change over time; check with your state wildlife or agriculture agency before buying, keeping or shipping it.

The care information here is written with AI help, so it can contain mistakes. Spot one? Tell us and we'll fix it. Native range: GRIIS Checklist of Introduced and Invasive Species (CC BY 4.0); Global Register of Invasive and Introduced Species (CC BY 4.0).