a primitive freshwater fish (Amia calva) of E North America, with a rounded tail fin and a long, narrow fin on its back: it is the only living member of an order (Amiiformes) of bony fishes
A freshwater fish (Amia calva) of central and eastern North America, having a large mouth and a long dorsal fin, and producing roe that is sometimes used for caviar. Also called dogfish . Also called mudfish . Also called also called regionally choupique .