Booth's pipefish (Halicampus boothae) is a species of marine fish of the family Syngnathidae. It is found in the Western Indian Ocean, in South Africa and the Comoro Islands, and in the Western Pacific, from South Korea and Japan to the Great Barrier Reef and Tonga. It lives in rocks and coral reefs to depths of 30 metres (98 ft), where it can grow to lengths of 17.5 centimetres (6.9 in). This species is ovoviviparous, with males carrying eggs and giving birth to live young. The specific name honours for Julie Booth, who "presented many interesting fishes to the Australian Museum from New South Wales and Lord Howe Island".