Chromis albicauda
Chromis albicauda, the white-caudal chromis, is a species of damselfish belonging to the genus Chromis. It can be found in the Western Pacific Ocean along the northern and western shores of Nusa Penida, Indonesia and the southern Japanese seas. It inhabits areas of cool upwelling. It typically forms aggregations, feeding high in the water column on zooplankton when currents are strong. It is oviparous, and the males of the species guard and aerate the eggs. References

albicauda
Fish of the Pacific Ocean
Taxa named by Gerald R. Allen
Fish described in 2009