Three-lined Wrasse (Stethojulis trilineata) オニベラ (size 15cm)
A male Three-lined Wrasse looks much like a male Stethojulis strigiventer. The lower blue line is very short on the Stethojulis strigiventer. Both Stethojulis trilineata and Stethojulis strigiventer are also known as Three-ribbon Wrasse. Amami 2024