Balistes polylepis

Balistidae
Finescale Triggerfish, Finescale Triggerfish
  • Balistes polylepis, Galapagos, Ecuador, Photo: Graham Edgar
    Balistes polylepis, Galapagos, Ecuador, Photo: Graham Edgar
  • Balistes polylepis, Gulf of California, Mexico, Photo: Rick Stuart-Smith
    Balistes polylepis, Gulf of California, Mexico, Photo: Rick Stuart-Smith
Distribution
Tropical Eastern Pacific
Description
Body deep and oval-shaped, blue-grey with visible scales, and a small mouth at at the tip of the snout. First dorsal spine thick and elongate, first dorsal fin standing up like a crest, second dorsal and tail fin tall and used as primary means of propulsion.
Information
  • Max Size: 76 cm
  • Sea Temperature Range: 19.6-30.2°C
  • Depth: 3-50m
  • Habitat: Coral Reef, Rocky Reef
  • Habitat Generalisation Index: 2.8
    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: Least Concern
  • Occurrence: Frequent (12% 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 (2 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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