Western Austalian deep-water tonguesole (Cynoglossus westraliensis) is a ray-finned fish of the family Cynoglossidae. It inhabits marine (saltwater) waters in benthic environments. This species can reach a maximum total length of 21.1 cm. With a trophic level of 3.5, it is a low-level carnivore, feeding on invertebrates and small organisms. It is assessed as Data Deficient on the IUCN Red List.
Dorsal soft rays (total): 120 - 126; Anal soft rays: 105 - 106; Vertebrae: 50. This species is distinguished by the following characters: snout is relatively long, bluntly rounded; head length 21.5% of SL, snout length 9.3-11.6% of SL (43.4-46.5% of HL); eyes are not contiguous; corner of mouth is nearer to posterior edge of opercle than to tip of snout; ocular side has 3 lateral lines, midlateral-line scales 111-115, scale rows between midlateral and dorsolateral lines 20, no lateral lines on blind side; ocular side with ctenoid scales, blind side with cycloid scales; D 120-126; A 105-106; caudal-fin rays 8; gill chamber and peritoneum black .Cross section: flattened.
Behavioural data for Western Austalian deep-water tonguesole is currently being reviewed.
Marine; demersal; depth range ? - 250 m . Subtropical Indian Ocean: Western Australia.
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