Scyra acutifrons

Sharpnose crab
Scyra acutifrons
Scyra acutifrons, Monterey, USA, Photo: Olivia Johnson
Scyra acutifrons
Scyra acutifrons, Monterey, USA, Photo: Olivia Johnson
Scyra acutifrons
Scyra acutifrons, Monterey, USA, Photo: Olivia Johnson
Scyra acutifrons
Scyra acutifrons, juvenile, Monterey, USA, Photo: Olivia Johnson
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Scyra acutifrons
Scyra acutifrons
Scyra acutifrons
Scyra acutifrons

Distribution


Description

Uses sponge and tunicates as decoration as a form of predator evasion. Rostrum is longer than it is wide, and is widest at the middle. Chelipeds/ claws in males are usually longer than the walking legs, and are orange-tipped. 


Information

Max Size: 4 cm

Sea Temperature Range: 5.6-17.5°C

Depth: N/A

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: Widespread (62.7% 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.