Petroscirtes fallax

Blenniidae
Yellow Sabretooth Blenny, Deceiver Fangblenny, Reef Sabretooth Blenny, Yellow-lined Sabretooth Blenny
  • Petroscirtes fallax, Adult, NSW, Australia, Photo: Ian Shaw
    Petroscirtes fallax, Adult, NSW, Australia, Photo: Ian Shaw
  • Petroscirtes fallax, Adult, NSW, Australia, Photo: Ian Shaw
    Petroscirtes fallax, Adult, NSW, Australia, Photo: Ian Shaw
Distribution
Temperate Australasia, Tropical Indo-Pacific
Description
Three broad black body stripes on a white body, clear tail fin and yellow dorsal fin. Meiacanthus lineatus (Lined Fangblenny) has additional narrow dark stripe under top edge of dorsal fin. Endemic to eastern Australia.
Information
  • Max Size: 10 cm
  • Sea Temperature Range: 15.5-30.1°C
  • Depth: 1-12m
  • Habitat: Coral Reef, Rocky Reef
  • Habitat Generalisation Index: 1.4
    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
Rarity
  • IUCN Threat Status: Not Evaluated
  • Occurrence: Infrequent (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: Solitary (1 per transect)
    Abundance is calculated as the average number of individuals recorded per RLS transect, where present.
Edit by: Joe Shields
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