Blue-face angelfish (Pomacanthus xanthometopon) swimming alongside a sea turtle (partially seen at upper right). This angelfish is found in the Indian and western Pacific Oceans. It inhabits coral reefs, where it feeds on sponges and sea squirts. It can reach a length of almost 40 centimetres. Its bold colouration has made it popular in the aquarium trade. Photographed off Sipadan, Malaysia.