Branchiura
Guides
Argulus
Fish Lice, Carp Lice
Argulus is a genus of ectoparasitic crustaceans commonly known as fish lice, comprising approximately 130–140 accepted species. They are obligate parasites of fish, inhabiting marine, brackish, and freshwater environments worldwide. The genus exhibits low host specificity and can infest diverse fish species, with documented impacts on host health including immunosuppression and facilitation of secondary bacterial infections.