The striated and polished surfaces are called slicken-sides.
有痕磨光面则称为擦痕面。
The striated and polished surfaces are called slicken-sides.
有痕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.
在大多数类尾,沿著背侧与腹侧缘前部具有无痕。在些,如鰕虎其有痕与无纹软数量比在鑑定上是有帮助。
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