Hairy marrons require the correct light levels, water temperature and diet for breeding. Mating at the start of spring, the male passes a spermatophore between the female’s final pair of walking legs. The female uses this to fertilise her eggs, incubating between 200 and 300 of them on her swimmerets for 12 to 16 weeks. When carrying eggs, females are said to be ‘berried’ due to the appearance of a bunch of berries on each swimmeret. The eggs hatch into pre-juveniles in early summer and become mature adults within a year (2).
Hairy marrons do not burrow to escape drought like other freshwater crustaceans and are comfortable on land for short periods. They are omnivorous, feeding on detritus and other small organisms found on the detritus (2).