primitive long-bodied carnivorous freshwater fish with a very long dorsal fin; found in sluggish waters of North America
同义词:bowfin, grindle, Amia calva
any of several small sharks
dogfish详细解释
dog.fish n.(名词)【复数】dogfish 或 dog.fish.es Any of various small sharks, chiefly of the family Squalidae, of Atlantic and Pacific coastal waters.Also called grayfish 狗鲨:一种小型鲨鱼,主要指大西洋和太平洋沿岸水域的棘鲨科鲨鱼也作 grayfishSee bowfin 参见 bowfin