We investigated the mating system of three sex changing gobiid fishes: Priolepis akihitoi, Trimma emeryi, and Trimma hayashii by underwater observation or specimen collection. P. akihitoi were found in pairs or were solitary. As the pair bond persisted for at least two months, and pair individuals seemed to mate with each other repeatedly, a monogamous mating system was suggested in P. akihitoi. In contrast, the harem-like group (living in a group composed of one largest male and some smaller females and/or immature individuals) of T. hayashii and T. emeryi suggested that these species have harem polygyny.

中文翻译：

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三种雌雄同体的戈壁鱼（Priolepis akihitoi、Trimma emeryi 和 Trimma hayashii（Actinopterygii：Gobiiformes）的群结构和假定的交配系统

我们通过水下观察或标本采集研究了三种性别变化的戈壁鱼的交配系统：Priolepis akihitoi、Trimma emeryi 和 Trimma hayashii。P. akihitoi 成对发现或单独存在。由于配对关系持续了至少两个月，并且配对个体似乎反复交配，因此在 P. akihitoi 中建议采用一夫一妻制的交配系统。相比之下，T. hayashii 和 T. emeryi 的类后宫群（生活在一个由一个最大的雄性和一些较小的雌性和/或未成熟个体组成的群体中）表明这些物种具有后宫一夫多妻制。