Reproductive behavior of the wrasse, Thalassoma lutescens, was studied on a shallow reef at Kuchierabu-Jima Island, southern Japan. The population consisted of protogynous hermaphrodites and a few (3.6%) primary males. The species is sexually dichromatic: secondary males showed the terminal phase (TP), and primary males the initial phase (IP) similar to females. TP males set up temporary mating territories above prominent rocks on the offshore reef slope in the late morning, and pair-spawned with females, which migrated there from the inshore area in early afternoon. IP males, which migrated into the mating territories with females, spawned by streaking.