Skipjack tuna Skipjack tuna The skipjack tuna ("Katsuwonus pelamis") is a medium-sized perciform fish in the tuna family, Scombridae. It is otherwise known as the aku, arctic bonito, mushmouth, oceanic bonito, striped tuna, or victor fish. It grows up to 1 m (3 ft) in length. It is a cosmopolitan pelagic fish found in tropical and warm-temperate waters. It is a very important species for fisheries. It is a streamlined, fast-swimming pelagic fish, common in tropical waters throughout the world, where it inhabits surface waters in large shoals (up to 50,000 fish), feeding on fish, crustaceans, cephalopods, and molluscs. It is an
Skipjack shad species, none were found. In addition to the extirpation of the skipjack shad from Minnesota and Wisconsin, the ebony shell ("Fusconaia ebena") and elephant ear ("Elliptio crassidens"), both state endangered mussels for which the skipjack is the sole host during their larval stages, are threatened to be extirpated as well. In order to keep their distribution from shrinking further, humans need to decrease the number of dams that are constructed, or construct dams that skipjack shads are able to migrate through. In addition to hindering their migration, dams reduce flow. Skipjacks prefer areas with fast flowing water. In addition, it