Trygonorrhina dumeriliiGuitarfish | Southern Fiddler Ray | Trygonorrhina guaneria
Found in southern Australia, from eastern Victoria, around Tasmania to south Western Australia. A second species of fiddler ray, Trygonorrhina fasciata is confined to NSW and southern Qld waters. T fasciata has triangular markings behind the eyes while T dumerilii has three short stripes immediately behind the eyes. Typically found foraging in shallow seagrass or sandflats.
Max Size: N/A cm
Sea Temperature Range: 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: Vulnerable
Occurrence: Infrequent (4.3% 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: Solitary (1 per transect)
Abundance is calculated as the average number of individuals recorded per RLS transect, where present.
Edit by: Andrew Green