Nursery-ground-species
Guides
Arenaeus cribrarius
Speckled Swimming Crab
Arenaeus cribrarius, the speckled swimming crab, is a portunid crab distributed throughout the western Atlantic from Massachusetts to Argentina. It inhabits shallow sandy substrates but occurs to depths of 61 m, burying itself in sediment while maintaining respiratory water flow through a maintained gap. The species exhibits nocturnal, solitary behavior and is an opportunistic feeder that ambushes prey from its buried position. It supports commercial fisheries, particularly along the Brazilian coast, and has demonstrated reproductive plasticity in response to population pressures.