A modified, usually elongated, scale (or group of scales) present at the upper or anterior base of the pectoral or ventral fins in some bony fishes.
英
美
- 变异,通常延长了,鳞片(或者群体的鳞片)在一些硬骨鱼类出现在胸或腹鳍的上面或前面基底。