Procambarus clarkii (Girard, 1852)
Francesca Gherardi and Vadim Panov
Last updated: December 14th, 2006
Red swamp or Louisiana crayfish/crawfish.
Crayfish with total body length (TL) up to 15 cm. Adults are usually dark red, orange, or reddish brown. Chelae are red on both surfaces, typically S-shaped and covered in spines and tubercles. Females have the seminal receptacle located between bases of posterior walking legs. Sexually active males have distinct grasping hooks on the ischia of the 2nd and 3rd pairs of walking legs that are used to hold females during copulation. Adult individuals mainly feed on plants and detritus, while juveniles consume a higher proportion of animal food. Sometimes cannibalistic.