Abudefduf septemfasciatus

Banded Sergeant | Narrow-banded Sergeant | Sevenbanded Damsel | Sevenbanded Sergeant
Abudefduf septemfasciatus
Abudefduf septemfasciatus, adult, Photo: Graham Edgar


Tropical Indo-Pacific


Silvery grey with six or seven soft edged, black bars that are just wider than adjacent white bars. Yellowish pectoral fin, and lacks white-edged tail of A. bengalensis (Bengal Sergeant).


Max Size: 23 cm

Sea Temperature Range: 23.4-31.7°C

Depth: 0-3m

Habitat Generalization Index: N/A

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 (1.3% 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: Many (16 per transect)

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