- bowfin, grindle, dogfish, Amia calva - primitive long-bodies carnivorous freshwater fish with a very long dorsal fin; found in sluggish waters of North America
--1 is a kind of ganoid, ganoid fish
--1 is a member of Amia, genus Amia - dogfish - any of several small sharks
--2 is a kind of shark
--2 has particulars: smooth dogfish; spiny dogfish