Cherry anthias inhabit in Asia, mainly around Japan. Most of Cherry Anthias is being thought that normally make school to keep widely spaced to each other in deeper than 40 meters. However, it is thought they make very dense school in shallower when mating season, especially a day of spring tide. And also, it must not be too strong current and might be affected by just a little flow and the direction and water temperature. There is the big current called Kuroshio around Japan which carry warm water from South. Cherry anthias prefer slightly cooler water temperatures such 100 meters depth, but recently, due to global warming and large meander of the Kuroshio, the surface sea temperature in the middle of Japan has risen significantly. As a result, the water depth where I can see cherry anthias was getting deeper year by year. In the near future most divers will lose the opportunity to see this large school by leisure diving. They looks almost black underwater. When lit light, the bewitching bright red body color of the males emerge.