Actinopterygii (ray-finned fishes) > Ophidiiformes
(Cusk eels) > Ophidiidae
(Cusk-eels) > Neobythitinae
Etymology: Bassozetus: Latin, bassus = thick, fat + Greek, ketos = marine mosnter, whale (Ref. 45335).
Environment / Climate / Range
Marine; bathypelagic; depth range 0 - 6930 m (Ref. 58302). Deep-water, preferred ?
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 26.3 cm SL male/unsexed; (Ref. 31384)
Morphology | Morphometrics
Snout inflated; eyes much smaller than snout; opercular spine weak or absent; preopercle without spines and posteriorly expanded almost reaching posterior margin of opercle; pseudobranchial filaments 2 (Ref. 34024).
Rare, deep pelagic species (Ref. 34024). Benthopelagic (Ref. 58302). Oviparous, with oval pelagic eggs floating in a gelatinous mass (Ref. 205). Of the 5 female specimens caught, 2 with 0.5 mm eggs. No identifiable stomach contents were found. Specimen collection used non-closing, pelagic fishing gear (bottom trawls) (Ref. 84269). Minimum depth from Ref. 58018.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Machida, Y. and Y. Tachibana, 1986. A new record of Bassozetus zenkevitchi (Ophidiidae, Ophidiiformes) from Japan. Jap. J. Ichthyol. 32(4):437-439. (Ref. 31384)
IUCN Red List Status (Ref. 109396)
CITES (Ref. 94142)
Threat to humans
Fisheries: of no interest
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), based on all LWR estimates for this body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.6 ±0.6 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low to moderate vulnerability (33 of 100) .