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Pseudochromis veliferus, also known as the sailfin dottyback, is a species of marine fish belonging to the family Pseudochromidae. It is native to the western Pacific Ocean, including the Great Barrier Reef, and the Indian Ocean.
The sailfin dottyback has a distinctive appearance, with a vibrant reddish-pink body and a large, fan-like dorsal fin. It can grow up to 10 centimeters (4 inches) in length.
This species is typically found in rocky reef habitats, where it feeds on small crustaceans, such as copepods and amphipods, and small fish. It is known for its aggressive behavior, and can be territorial towards other fish, including individuals of its own species.