The striated and polished surfaces are called slicken-sides.
有条痕的磨光面则称为擦痕面。
The striated and polished surfaces are called slicken-sides.
有条痕的磨光面则称为擦痕面。
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,沿著背侧与腹侧缘的前有无条痕的鳍条。在些中,例如鰕虎有条痕的与无条纹的软条数量比在鑑定上是有帮助的。
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