Yellowspot emperor fish. School of yellowspot emperor fish (Gnathodentex aurolineatus) swimming by an underwater wreck (background). This fish, also known as the gold-lined sea bream, is found in tropical coral reefs of the Indian and western Pacific Oceans. It has large eyes for feeding at night and a silver coloured body with thin gold lines. It grows to a length of 30cm.. Stunning Photo Gifts From Science Photo Library