黄肚蓝魔鬼鱼 Pomacentrus coelestis huáng dù lán mó guǐ yú

黄肚蓝魔鬼鱼又名变色雀鲷，分布于中国南海、中国台湾地区和印度洋、太平洋的珊瑚礁水域，属雀鲷科，体长10-12cm，椭圆形。体色天蓝，嘴部有蓝色或黑色花纹，胸鳍下方的腹部一直到尾柄上方都是鲜黄色，尾鳍、臀鳍鲜黄色，鳍边缘白色。

百度翻译提供：

The yellow belly blue devil fish, also known as the color sparrow, is distributed in the South China Sea, Taiwan China, India ocean and coral reef waters of the Pacific Ocean. It belongs to the family Sparus, with a body length of 10-12cm and oval shape. The body color is sky blue, the mouth has blue or black patterns, the abdomen under the pectoral fin is bright yellow up to the top of the tail handle, the tail fin and hip fin are bright yellow, and the edge of the fin is white.