Signigobius biocellatus

Gobiidae
Crab-eye Goby, Four-eyed Goby, Signal Goby, Twinspot Goby
  • Signigobius biocellatus, Raja Ampat, Indonesia, Photo: Andrew Green
    Signigobius biocellatus, Raja Ampat, Indonesia, Photo: Andrew Green
  • Signigobius biocellatus, North WA, Australia, Photo: Andrew Green
    Signigobius biocellatus, North WA, Australia, Photo: Andrew Green
Distribution
Tropical Indo-Pacific
Description
Pale body with brown blotches, distinct large, yellow-ringed ocelli on each dorsal fin, narrow brown bar through eye, large black, blue-spotted pelvic and anal fins. Double-ended appearance and frequently moves in either direction. Often in pairs, hovering low down over the sand signalling to each other with their eye-spots.
Information
  • Max Size: 10 cm
  • Sea Temperature Range: 23.5-31.1°C
  • Depth: 1-30 m
  • Habitat: Coral Reef, Soft sediment
  • Habitat Generalisation Index: 1
    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 (10% 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: RD Stuart-Smith, GJ Edgar, AJ Green, IV Shaw. 2015. Tropical Marine Fishes of Australia. Reed New Holland
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