红尾蝴蝶鱼群游过印度-太平洋珊瑚礁

school of red-tailed butterflyfish (Chaetodon collare) moves across an Indo-Pacific coral reef, their bold black-and-white banding and red tail fins making them a distinctive presence on Andaman Sea reefs. Also known as the collared butterflyfish or Pakistani butterflyfish, this species forages in pairs or small groups, picking coral polyps and small invertebrates from the substrate. Their presence signals a structurally healthy reef capable of supporting specialist coral-feeding fish. Andaman Sea, Krabi Province, Thailand.