Bluespine Unicornfish (Naso unicornis) テングハギ also Kala
Bluespine Unicornfish have two fixed sharp spines on each side before the tail. They are grazers and often swim in schools. Can get over 50 cm. Amami 2023
A juvenile Bluespine Unicornfish. Amami 2023
A school of Bluespine Unicornfish there are more behind them. They are called Kala in Hawaiian and テングハギ in Japan. Amami 2023