Meiacanthus atrodorsalis

Eyelash Fangblenny | Eyelash Harp-tail | Eyelash Harptail Blenny | Forktail Blenny | Lyretail Blenny | Yellowtail Fangblenny | Yellowtail Poison-fang Blenny
Meiacanthus atrodorsalisMeiacanthus atrodorsalis, Cairns, Great Barrier Reef, QLD, Photo: Andrew Green
Meiacanthus atrodorsalisMeiacanthus atrodorsalis, Bali, Indonesia, Photo: Ian Shaw
Meiacanthus atrodorsalisMeiacanthus atrodorsalis, Photo: Rick Stuart-Smith
Meiacanthus atrodorsalisMeiacanthus atrodorsalis, North WA, Australia, Photo: Andrew Green
Meiacanthus atrodorsalisMeiacanthus atrodorsalis, Night. Dobu Is, Papua New Guinea, Photo: Andrew Green
1 / 5
Meiacanthus atrodorsalis
Meiacanthus atrodorsalis
Meiacanthus atrodorsalis
Meiacanthus atrodorsalis
Meiacanthus atrodorsalis


Tropical Indo-Pacific


Grey-blue front half of body grading to a yellow tail with long filamentous upper and lower lobes, black stripe along base of dorsal fin and distinctive ‘eyelash’ marking (short oblique bar through eye). Mimicked by Plagiotremus laudandus (Bicolor Fangblenny) which lacks the eyelash and has black stripe near top of dorsal fin, rather than base. Similar M. phaeus (Twilight Fangblenny) lacks yellow rear and ‘eyelash’.


Max Size: 11 cm

Sea Temperature Range: 21.4-31.2°C

Depth: 1-30 m

Habitat Generalization Index: 15.89

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: Common (22.1% 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 (3 per transect)

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

Edit by: Joe Shields