Siganus niger is commonly known as the black rabbitfish or dusky rabbitfish. It is a species of fish belonging to the family Siganidae, which includes rabbitfishes. Here are some key characteristics and information about Siganus niger:
- Appearance: The black rabbitfish has a distinctive coloration, with a dark brown to black body. It typically has a whitish or yellowish band running along the base of the dorsal fin and a similar band along the base of the anal fin. The fins may have yellowish edges. They have a compressed, oval-shaped body and a protruding mouth with small, fine teeth.
- Size: They can grow up to about 35 cm (14 inches) in length, although they are usually smaller in captivity.
- Distribution: Siganus niger is found in the tropical and subtropical waters of the Indian Ocean and the western Pacific Ocean. Its range extends from East Africa (including the Red Sea) to the Indo-Pacific region, including the coasts of Australia and Southeast Asia.
- Habitat: Black rabbitfishes are commonly found in coastal reefs, lagoons, and seaward reefs with abundant coral growth. They prefer areas with rocky substrates and seaweed beds, where they can feed on algae and other plant material.
- Diet: They are herbivorous and primarily feed on algae, seagrasses, and other plant matter. They play a role in maintaining the health of coral reefs by grazing on algae that can otherwise overgrow and compete with corals.
