- EnglishName: Black striped cardinalfish
- Local Name : Fulhaarongu boadhi
- Size : Common to 6 cm; max. 9 cm
- Family: Order : Specimen
- Distinctive Characters: First dorsal fin with 7 spines, second dorsal fin with 1 spine and 9 rays. Anal fin with 2 spines and 8 rays. Pectoral fin with 13 or 14 (usually 14) rays. Lateral line scales 24-25. Total gill rakers 20-24 (usually 21-23).
Colour: Whitish to yellow with five dark reddish to black stripes on head and body, which are broader than pale interspaces. Fins light red.
- Habitat and Biology: A coral reef species, usually seen singly or in pairs on reef flat and shallow outer lagoon reefs to depths of 18 m. Rests by day under ledges or in crevices. Emerges at night to feed on small benthic invertebrates.
- Distribution: Indo-Pacific.
- Remarks: Apogon nigrofasciatus has been called A. aroubiensis Hombron and Jacquinot, but their description not identifiable. Very similar to Apogon angustatus but in that species the pale interspaces are broader than the dark stripes.