They are soft and smooth-skinned, with a circular or nearly circular Bodydisk formed by the head and pectoral fins. They are harmless unless touched or stepped on.
体柔软，皮肤光滑，头与胸鳍形成圆或近于圆形的体盘。如不被触及则对人无害。
2
Marine fishes with a flattened elongated body and a sucking disk on the head for attaching to large fish or moving objects.
身体扁平细长的海生鱼，头部有吸盘，可吸附于大鱼或移动的物体上。
3
In this paper, a computational method for coplanar disk-shaped cracks within an elastic infinite body is presented.