Ray or diamond-shaped fish Chengyuan, Xiongqi clemency from Wenduan expansion Shendao the end of slender roots and some types of Tsim kiss from cranial prominent beak cartilage formation.

• 一旦抢救不及时，受伤的人甚至有生命危险。鳐鱼的家族成员很多。体形巨大的蝠鲼和能够放电的电鳐都属于鳐鱼类。