The striated and polished surfaces are called slicken-sides.

有条痕的则称为擦痕。

Most fishes have unstriated rays along the anterior part of the dorsal and ventral edges (leading edges) of the caudal fin.

在大多数类的尾鳍，沿著侧与腹侧缘的前部具有无条痕的鳍条。在中，例如鰕虎其有条痕的与无条纹的软条数量比在鑑定上是有帮助的。