gill cover The bones of the head that cover the gill chamber, comprising the preopercle, opercle, subopercle and interopercle; the operculum.

• 鳃的盖覆盖鳃室的头部的硬骨，包含前鳃盖骨，鳃盖，子鳃盖与中鳃盖；鳃盖。