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; bathydemersal; depth range 4375 - 5600 m (Ref. 3686). Deep-water, preferred ?
Western and Eastern (south of the Cape Verde and few specimens from the Mid-Atlantic Ridge) Atlantic:
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 25.0 cm TL male/unsexed; (Ref. 3686)
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 species (Ref. 34024). Minimum depth reported from Ref. 34024. Oviparous, with oval pelagic eggs floating in a gelatinous mass (Ref. 205). Of the 7 female specimens caught, 1 with 0.6 mm eggs. No identifiable stomach contents were found (Ref. 84269).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Nielsen, J.G., 1990. Ophidiidae. p. 564-573. In J.C. Quero, J.C. Hureau, C. Karrer, A. Post and L. Saldanha (eds.) Check-list of the fishes of the eastern tropical Atlantic (CLOFETA). JNICT, Lisbon; SEI, Paris; and UNESCO, Paris. Vol. 2. (Ref. 3686)
IUCN Red List Status (Ref. 109396)
CITES (Ref. 94142)
Threat to humans
Fisheries: of no interest
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=0.00102 (0.00046 - 0.00225), b=3.06 (2.88 - 3.24), based on all LWR estimates for this body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.5 ±0.6 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
): Medium, minimum population doubling time 1.4 - 4.4 years (Assuming tmax>3).
Vulnerability (Ref. 59153
): Low vulnerability (25 of 100) .