Peniculus (crustacean)

Peniculus
Peniculus hokutoae attached to its host
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Copepoda
Order: Siphonostomatoida
Family: Pennellidae
Genus: Peniculus
von Nordmann, 1832

Peniculus is a genus of marine copepods in the family Pennellidae. They occur worldwide and typically parasitize coastal or epipelagic fish, with the exception of Peniculus hokutoae that was found parasitizing a mesopelagic myctophid, Symbolophorus evermanni.