Hymenocephalus papyraceus Jordan & Gilbert, 1904

Family:  Macrouridae (Grenadiers or rattails)
Max. size:  10 cm TL (male/unsexed)
Environment:  benthopelagic; marine; depth range 220 - 600 m
Distribution:  Northwest Pacific: Sagami Bay, Japan.
Diagnosis:  This species is distinguished by the following characters: pelvic fin rays 10-11; pectoral fin rays 16-18; projecting snout with thin, pointed tip, 20-25% HL; short barbel, 4-5% HL, and not reaching vertical through anterior margin of orbit; orbit diameter moderate, 25-30% HL; interorbital width 70-.80% HW; infraorbital width 16-20% HL; very long preopercular supporter, straight, 10-11% HL; gill rakers 18-22; ventral striae reaching to about 1/3 distance from pelvic fin bases to periproct; otolith with moderately high predorsal lobe and with colliculi separated, closely placed across narrow collum, terminating far from anterior and posterior rims of otolith; otholith length to height (OL:OH), 1.05; total colliculum length to pseudocolliculum length (TCL:PCL), 2.1 (Ref. 98298).
Biology: 
IUCN Red List Status: Not Evaluated (N.E.) Ref. (130435)
Threat to humans:  harmless


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