Tony Wu / Asian sheepshead wrasse (Semicossyphus reticulatus), male in white breeding colouration. Niigata Prefecture, Honshu, Japan. June.

Tony Wu / Asian sheepshead wrasse (Semicossyphus reticulatus), male approaching two gravid females during breeding season. Sado, Niigata Prefecture. June.

Tony Wu / Asian sheepshead wrasse (Semicossyphus reticulatus), two males fighting over territory. Female wrasse in background. Niigata Prefecture, Honshu, Japan. June.

Tony Wu / Two mature male Asian sheepshead wrasses (Semicossyphus reticulatus) fighting over territory during breeding season. Mature males take on a whitish coloration, when approaching females and during terr...

Tony Wu / Male Asian sheepshead wrasse (Semicossyphus reticulatus) courting a female. The female has a swollen belly, indicative of her readiness to spawn. Niigata Prefecture, Japan.