Arripis trutta

Australian salmon
Arripis trutta
Arripis trutta, Narooma, NSW, Photo: Andrew Green
Arripis trutta
Arripis trutta, Narooma, NSW, Photo: Andrew Green
Arripis trutta
Arripis trutta, Lord Howe Is, NSW, Photo: Andrew Green
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Arripis trutta
Arripis trutta
Arripis trutta

Distribution

Temperate Australasia


Description

More gillrakers (the bony tooth-like processes on the inside of the gill arches) than the western Australian salmon(33-40 on the first gill arch, cf. 25-31 for western Australian salmon). Both species occur in large schools along the open coast, with juveniles found in very shallow water in estuaries. Eastern Australian salmon spawn during summer in the region between Lakes Entrance and Bermagui. The eastern Australian salmon cannot be reliably distinguished from the western Australian salmon using external appearance, consequently identification in Vic and Tas–where the distribution of the two species overlaps–requires the collection of specimens.


Information

Max Size: 89 cm

Sea Temperature Range: 12.2-24.6°C

Depth: 0-30m

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 (6.3% 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: Large aggregations (119 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