a large, dangerous semiaquatic pit viper which inhabits lowland swamps and waterways of the south-eastern US. When threatening it opens its mouth wide to display the white interior 食鱼蝮,噬鱼蛇。 亦称 water moccasin
Agkistrodon piscivorus, family Viperidae 拉丁名 Agkistrodon piscivorus,蝰科