Hymenocephalus iwamotoi Schwarzhans, 2014
photo by Schwarzhans, W.

Family:  Macrouridae (Grenadiers or rattails)
Max. size:  10.3 cm TL (male/unsexed)
Environment:  benthopelagic; marine; depth range - 242 m
Distribution:  Eastern Indian Ocean: Western Australia (Browse Island).
Diagnosis:  Dorsal spines (total): 2-2; Dorsal soft rays (total): 6-7. This small species (<10.5 cm TL) is distinguished by the following characters: pelvic fin rays 8 (7-9); pectoral 12-13; D1II,6-7; gill rakers 17-20; long barbel 40-46% HL, reaching vertical through rear end of orbit; orbit 35-38% HL; rounded snout, barely protruding, short 15-19% HL; posterior luminescent lens round, ventral striae extending to near periproct: compressed otolith, otholith length to height (OL:OH) is 0.95; colliculi separated, small; pseudocolliculum small, total colliculum length to pseudocolliculum length (TCL:PCL), 1.8-2.0 (Ref. 98298).
Biology: 
IUCN Red List Status: Not Evaluated (N.E.) Ref. (130435)
Threat to humans:  harmless


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