Ostorhinchus nigrofasciatus

Blackstriped cardinalfish | Black-banded Cardinalfish | Black-striped Cardinalfish | Apogon nigrofasciatus
Ostorhinchus nigrofasciatus
Ostorhinchus nigrofasciatus, Naigani Is, Fiji, Photo: Andrew Green
Ostorhinchus nigrofasciatus
Ostorhinchus nigrofasciatus, adult, Bali, Indonesia, Photo: Ian Shaw
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Ostorhinchus nigrofasciatus
Ostorhinchus nigrofasciatus


Tropical Indo-Pacific


Five full dark stripes, much wider than inter-spaces which are often yellow. This gives an appearance of a black fish with yellow stripes. Tail spot hard to distinguish and lacks white margin found on very similar O. angustatus. Usually found well back in caves and under ledges, singly or in pairs.


Max Size: 11 cm

Sea Temperature Range: 22.8-30.6°C

Depth: 3-50m

Habitat Generalization Index: 6.31

Also referred to as the SGI (Species Generalisation Index), this describes the habitat niche breadth of the species. Species with values less than 15 are found in a relatively narrow range of reef habitat types (specialists), while those over 25 may be found on most hard substrates within their range (generalists). Learn more here.

Conservation and Rarity

IUCN Status: Not Evaluated

Occurrence: Infrequent (9.2% of sites)

Occurrence describes how often the species is found on surveys within its distribution. It is calculated as the % of reef sites surveyed by RLS divers across all the ecoregions in which the species has been observed

Abundance: Few (4 per transect)

Abundance is calculated as the average number of individuals recorded per RLS transect, where present.

Edit by: RD Stuart-Smith, GJ Edgar, AJ Green, IV Shaw. 2015. Tropical Marine Fishes of Australia. Reed New Holland