Crangonidae

Crangonidae is a family of shrimp belonging to the order Decapoda. These shrimp are commonly known as mud shrimp or sand shrimp due to their preferred benthic habitats. The family is characterized by a robust body, often with a short, thick rostrum. A distinctive feature of many crangonids is the presence of a large, powerful second pereopod (walking leg) that is often chelate (possessing a claw). Their coloration typically varies from drab browns and grays to reddish hues, providing camouflage within their sandy or muddy environments.

Crangonidae are found worldwide in marine and brackish waters, inhabiting a range of substrates from shallow intertidal zones to deeper continental shelves. They are primarily scavengers and predators, feeding on small invertebrates, detritus, and algae. Many species are important components of the marine food web, serving as prey for larger fish and other marine animals. Reproduction in Crangonidae involves external fertilization, with females carrying their eggs attached to their pleopods until hatching. The larval stages are planktonic, eventually settling to the seabed to develop into juvenile shrimp. The genus Crangon, which gives the family its name, is particularly well-known, with species like Crangon crangon being commercially fished in some regions.