Blackfish

Blackfish is a common name for various species of fishes and cetaceans, including:

Fish

 * Alaska blackfish (Dallia pectoralis), an esocid from Alaska, Siberia, and the Bering Sea islands
 * Black fish (Carassioides acuminatus), a cyprinid from China and Vietnam
 * Black ruff (Centrolophus niger)
 * Black sea bass (Centropristis striata)
 * Black triggerfish
 * Cornish blackfish (Schedophilus medusophagus)
 * Gadopsis, two Australian freshwater fish:
 * River blackfish (G. marmoratus)
 * Two-spined blackfish (G. bispinosus)
 * Galjoen (Dichistius capensis)
 * Imperial blackfish (Schedophilus ovalis)
 * Japanese black porgy (Acanthopagrus schlegelii), a large sea bream often cultivated in aquaculture
 * Parore (Girella tricuspidata)
 * Sacramento blackfish (Orthodon microlepidotus)
 * Tautog (Tautoga onitis)

Dolphins

 * Pilot whales (Globicephala)
 * Melon-headed whale (Peponocephala electra)
 * False killer whale (Pseudorca crassidens)
 * Pygmy killer whale (Feresa attenuata)