Crab-eye Goby, Four-eyed Goby, Signal Goby, Twinspot Goby
Signigobius biocellatus, Raja Ampat, Indonesia, Photo: Andrew Green
Signigobius biocellatus, North WA, Australia, Photo: Andrew Green
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.
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
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