Tags: Crustacean.
Alpheus is a genus of snapping shrimp of the family Alpheidae. This genus contains in excess of 250 species making this the most species-rich genus of shrimp. Like other snapping shrimp the claws of Alpheus are asymmetrical with one of the claws enlarged for making a popping noise. Some species in the genus enter into symbiotic relationships with gobiid fishes.