Actinopterygii (ray-finned fishes) > Ophidiiformes
(Cusk eels) > Ophidiidae
(Cusk-eels) > Neobythitinae
Etymology: Holcomycteronus: Greek, holkos, -e, -on = something that pulls + Greek, mykter, -eros = nose + Greek, onos = hake.
Environment: milieu / climate zone / depth range / distribution range
Marine; bathydemersal; depth range 2705 - 4575 m (Ref. 34024). Deep-water; ? - 1°C (Ref. 75736); 67°S - 68°S
Southwest Atlantic Ocean and Southwest Indian Ocean: Southwest Atlantic Ocean: the Weddell Abyssal Plain. Southwest Indian Ocean: Crozet Islands.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 30.7 cm SL male/unsexed; (Ref. )
Morphology | Morphometrics
Robust body with rounded snout; eye diameter much shorter than snout; opercular spine strong; 2 median and a pair of basibranchial tooth patches; 7-11 developed rakers on anterior gill arch; pelvic fin rays flattened distally and somewhat thicker in males (Ref. 34024).
Rare species (Ref. 34024). Stomach remains include crustaceans (benthic isopod Storthyngura sp. 1.5-2.5 cm long) and an unidentifiable isopod) (Ref. 75736). Reproductive strategy possibly similar to other members of this family featuring oviparity, with oval pelagic eggs floating in a gelatinous mass (Ref. 205).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Nielsen, J.G., D.M. Cohen, D.F. Markle and C.R. Robins, 1999. Ophidiiform fishes of the world (Order Ophidiiformes). An annotated and illustrated catalogue of pearlfishes, cusk-eels, brotulas and other ophidiiform fishes known to date. FAO Fish. Synop. 125(18):178p. Rome: FAO. (Ref. 34024)
IUCN Red List Status (Ref. 120744)
CITES (Ref. 118484)
Threat to humans
Fisheries: of no interest
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00417 (0.00163 - 0.01066), b=3.12 (2.89 - 3.35), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.6 ±0.6 se; Based on size and trophs of closest relatives
Resilience (Ref. 120179
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Moderate vulnerability (36 of 100) .