Amiidae

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Amiidae (bowfin; infraclass Holostei, order Amiiformes) A family with only one living representative, Amia calva, a fairly large (up to 6 kg) carnivorous fish that has a long dorsal fin with only soft rays, a gular plate, a heterocercal tail, and a lung-like swim-bladder. The male guards the nest and larvae.