Callogobius depressus

Flathead goby

Callogobius depressus, Jervis Bay, NSW, Photo: Andrew Green

Callogobius depressus, Narooma, NSW, Photo: Andrew Green

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Similar Species

Trianectes bucephalus

Same Genus

Callogobius mucosus

Distribution

Temperate Australasia

Description

Differs from Callogobius mucosus, which has much the same geographic distribution, in possessing a flatter head, less elongate body, and lighter colouration. Both species are flattened, possess skin ridges on the head and a rounded tail, and can generate copious amounts of mucous from the head if disturbed. They are also both common and hide under rocks during the day.

Information

Max Size: 14 cm

Sea Temperature Range: 16.2-23.2°C

Depth: 0-9m

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 (1.6% 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: GJ Edgar. 2008. Australian Marine Life. New Holland, Sydney