鳄雀鳝 'e que shan'

鳄雀鳝（学名：Atractosteus spatula）：是雀鳝目、雀鳝科、大雀鳝属动物。是北美7种雀鳝鱼中最大的一种，能长到3米。体延长，上下颌亦长。口裂深，具锐齿。背、臀鳍相对并位于体后部；无脂鳍；腹鳍腹位。各鳍无硬刺。侧线完全。鳔有鳔管与食道背部相联，鳔多分室，形如肺，鳔壁密布微血管，可营气体代谢。体被菱形硬鳞，具后凹椎体及近歪形尾，系低等硬骨鱼。

百度翻译提供：

Crocodile Monopterus (scientific name: atractosteus spatula): it is an animal of Monopterus, monopteroideae and great Monopterus. It is the largest of seven species of eel in North America, which can grow to 3 meters. The body is prolonged, and the upper and lower jaw are also long. The mouth is deeply cleft and has sharp teeth. Dorsal and gluteal fins are opposite and located at the back of the body; Fat free fin; Ventral position of ventral fin. Each fin has no hard thorn. The side line is completely. The swim bladder has a swim bladder tube connected with the back of the esophagus. The swim bladder is divided into many chambers, shaped like a lung. The wall of the swim bladder is densely covered with microvessels, which can be engaged in gas metabolism. The body is covered with rhombic hard scales, with a concave vertebral body and a nearly crooked tail. It is a low-grade bony fish.www.fishbkw.com