Hymenocephalus longibarbis (Günther, 1887)
Longbarb whiptail
photo by Schwarzhans, W.

Family:  Macrouridae (Grenadiers or rattails)
Max. size:  25.5 cm TL (male/unsexed)
Environment:  benthopelagic; marine; depth range 430 - 920 m
Distribution:  Indo-West Pacific: northwestern Australia.
Diagnosis:  Distinguished by the following characters: pelvic fin rays 8; pectoral fin rays 13-17; barely projecting snout; head bones are rather firm; barbel very long, 50-60% HL, reaching vertical through posterior edge of orbit; orbit diameter 30-33% HL; interorbital width 45-48% HW; gill rakers 16-20; ventral striae reaching close to periproct; otholith length to height (OL:OH) is 1.1-1.3; total colliculum length to pseudocolliculum length (TCL:PCL) is 1.8-2.1 (Ref. 98298).
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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