Nectocarcinus integrifronsRed swimmer crab
Bottom-dwelling species with flattened hind limbs, a purple-brown front half of the carapace and light brown rear, and by the smooth front margin between the eyes. It feeds mainly on plant material. Portunid crabs often pair together before mating and may remain in this position for several days.
Max Size: 8 cm
Sea Temperature Range: 11.4-21.2°C
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: Frequent (10.6% 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: Solitary (1 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