Istigobius spence

Reticulate sandgoby | Pearl Goby | Reticulated Goby | Twin-spots Sandgoby
Istigobius spence
Istigobius spence, Photo: Rick Stuart-Smith
Istigobius spence
Istigobius spence, Qld, Australia, Photo: Ian Shaw
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Istigobius spence
Istigobius spence


Temperate Australasia, Tropical Indo-Pacific


Grey body with black and white spots. Numerous dark blotches gives overall darker appearance compared to similar Istigobius species, and black spots on body with light edges. Found on sandy patches near silty reefs and estuarine areas.


Max Size: 9 cm

Sea Temperature Range: N/A

Depth: 1-12m

Habitat Generalization Index: N/A

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: Infrequent (8.2% 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