This Atka mackerel’s father was holding a starfish and trying to keep it away from their protected egg territory. Atka mackerel's father was taking care of the eggs laid by the female. They were sending fresh seawater to eggs with the mouse. There are many omnivorous creatures such as sea urchins and starfish here, and eggs are always targeted by them, for that, father always patrols.
|© Sayaka Ichinoseki