Strongylura incisa, Adult, Chilcott Reef, Coral Sea, Photo: Andrew Green
Bottom lobe of tail longer than top, with middle of tail margin wavy rather than forked as in Tylosurus crocodilus (crocodile longtom - not shown) .
Max Size: 100 cm
Sea Temperature Range: 21.4-33.7°C
Habitat: Coral Reef, Rocky Reef
Habitat Generalisation Index: 0.1
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
IUCN Threat Status: Not Evaluated
Occurrence: Infrequent (1% 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: Many (10 per transect)
Abundance is calculated as the average number of individuals recorded per RLS transect, where present.
Edit by: RD Stuart-Smith, GJ Edgar, AJ Green, IV Shaw. 2015. Tropical Marine Fishes of Australia. Reed New Holland