Congrogadus subducens

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Congrogadus subducens
Congrogadus subducens, Janquil Island, Western Australia, Photo: Amelia Fowles


Tropical Indo-Pacific


Eel-like body with irregular pale and brown bands. Head with blotches and speckles, pale tailfin, and often a large light-edged dark spot on operculum in front of pectoral fin. Colour variable. Found among rocks, coral rubble or crevices in the reef. Length to 43cm.


Max Size: 45 cm

Sea Temperature Range: 22.3-28.3°C

Depth: 0-10m

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 (2.8% 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: Solitary (1 per transect)

Abundance is calculated as the average number of individuals recorded per RLS transect, where present.

Edit by: Joe Shields