True Blue Lobster (Procambarus alleni) (Crayfish)

Procambarus alleni is the actual species behind most of the "electric blue" freshwater crayfish in the hobby, and the true blue line is bred for a solid, saturated color rather than the patchier blue you'll sometimes see in wild-caught stock. Same crayfish attitude as always — it'll eat, dig, and treat anything smaller as either food or an obstacle.

Care level: Easy · Temperament: Aggressive · Max size: ~5" · Min tank: 20 gal · Diet: Omnivore, scavenger