a voracious freshwater fish that is native to northeastern China; can use fin to walk and can survive out of water for three days; a threat to America more..a voracious freshwater fish that is native to northeastern China; can use fin to walk and can survive out of water for three days; a threat to American populations of fish(noun.animal)
a group of vertebrates comprising both cartilaginous and bony fishes and sometimes including the jawless vertebrates; not used technically (noun.animal)