Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Gadiformes
(Cods) > Macrouridae
(Grenadiers or rattails) > Macrourinae
Etymology: Hymenocephalus: Named for its transparent membrane-like head covering (‘‘hymen head’’) and fragile nature of head bones (Ref. 100825); fuscus: Name from Latin 'fuscus' meaning swarthy, referring to the overall dark colouration.
Environment: milieu / climate zone / depth range / distribution range
Marine; bathypelagic; depth range 549 - 1202 m (Ref. 97189). Subtropical
Southwest Pacific: Wanganella Bank, West Norfolk Ridge, off northeast and north coasts of North Island, and northwest Challenger Plateau.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 14.8 cm TL male/unsexed; (Ref. 97189)
Morphology | Morphometrics
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).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
McMillan, P. and T. Iwamoto, 2014. Descriptions of four species of grenadier fishes of the genera Hymenocephalus and Hymenogadus (Teleostei, Gadiformes, Macrouridae) from the New Zealand region and Tasman Sea, including two new species of Hymenocephalus. Zootaxa 3856:117-134.. (Ref. 97189)
IUCN Red List Status (Ref. 120744)
CITES (Ref. 118484)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00224 (0.00097 - 0.00516), b=3.16 (2.97 - 3.35), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.3 ±0.4 se; Based on size and trophs of closest relatives
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low vulnerability (25 of 100) .