Genicanthus lamarck

Blackstriped angelfish | Freckletail Lyretail Angelfish | Lamarck's Angelfish
Genicanthus lamarck
Genicanthus lamarck, Raja Ampat, Indonesia, Photo: Andrew Green
Genicanthus lamarck
Genicanthus lamarck, Raja Ampat, Indonesia, Photo: Graham Edgar
Genicanthus lamarck
Genicanthus lamarck, Photo: Rick Stuart-Smith
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Genicanthus lamarck
Genicanthus lamarck
Genicanthus lamarck


Tropical Indo-Pacific


Black stripes radiating back from eye on white central body, upper and lower body grey, dorsal fin black, yellow patch on top of head, grey tail with black spots, and elongated tips on upper and lower lobes. Similar male Genicanthus watanabei (Watanabe's Angelfish) has stripes on underside. Lacks vertical banding of males of other similarly distributed Genicanthus species, and also distinguished by presence of stripes in female. Length to 25 cm.


Max Size: 25 cm

Sea Temperature Range: 24.3-31.6°C

Depth: 10-50m

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: Least Concern

Occurrence: Infrequent (6.4% 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: Joe Shields