Hymenocephalus fuscus McMillan & Iwamoto, 2014
Black membranehead

Family:  Macrouridae (Grenadiers or rattails)
Max. size:  14.8 cm TL (male/unsexed)
Environment:  bathypelagic; marine; depth range 549 - 1202 m
Distribution:  Southwest Pacific: Wanganella Bank, West Norfolk Ridge, off northeast and north coasts of North Island, and northwest Challenger Plateau.
Diagnosis:  This species is distinguished by the following characters: pelvic fin rays 11-12; gill rakers first arch (outer/inner) 12-15/16-19; no or minute barbel; orbit diameter 20-33 % HL; body depth 70-85 % HL; suborbital width 23-28 % HL; snout length 25-33 % HL; upper jaw length 38-48 % H; colour of head and trunk of fresh specimens blackish, tail brownish peppered with melanophores; large, oval, deciduous scales on body and tail (Ref. 97189).
Biology: 
IUCN Red List Status: Not Evaluated (N.E.) Ref. (130435)
Threat to humans:  harmless


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