Argulidae

Argulidae
Argulus sp. on a stickleback
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Ichthyostraca
Subclass: Branchiura
Thorell, 1864
Order: Arguloida
Yamaguti, 1963
Family: Argulidae
Leach, 1819
Genera

The family Argulidae, whose members are commonly known as carp lice or fish lice, (not to be confused with Caligidae, also commonly referred to as sea lice) are parasitic crustaceans in the class Ichthyostraca. It is the only family in the monotypic subclass Branchiura and the order Arguloida, although a second family, Dipteropeltidae, has been proposed.