Trachonurus yiwardaus Iwamoto & Williams, 1999
Yiwarda whiptail

Family:  Macrouridae (Grenadiers or rattails)
Max. size:  50 cm TL (male/unsexed)
Environment:  bathydemersal; marine; depth range 770 - 1293 m
Distribution:  Eastern Indian Ocean: Australia.
Diagnosis:  Dorsal spines (total): 2-2. Grooved lateral line present; body scales relatively small, lateral line scales over distance equal to predorsal length 39-50, scale rows between pelvic fin base and operculum 11-12, below midbase of first dorsal fin to anal fin 26-30, below origin of second dorsal fin 6-9; scale covering on gular and branchiostegal membranes extensive; teeth in both jaws relatively small, but with a distinctly enlarged outer series on premaxillary and a slightly enlarged inner series on dentary; total gill rakers on inner series of first arch 9-13, on inner and outer series of second arch 9-12. Snout protruding, angular.
Biology:  A benthic species found on the continental slope (Ref. 75154).
IUCN Red List Status: Not Evaluated (N.E.) Ref. (130435)
Threat to humans:  harmless


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