Actinopteri (ray-finned fishes) > Anguilliformes
(Eels and morays) > Congridae
(Conger and garden eels) > Congrinae
Etymology: Gnathophis: Greek, gnathos = jaw + Greek, ophis = serpent (Ref. 45335). More on author: Kaup.
Environment: milieu / climate zone / depth range / distribution range
Marine; demersal. Subtropical
Southeast Atlantic: False Bay to Plettenberg Bay, South Africa. Also at Tristan da Cunha Island.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 37.0 cm TL male/unsexed; (Ref. 5323)
Vertebrae: 128 - 135. Olive brown dorsally, silvery on head, lighter ventrally. Dusky margin on median fins.
Found in about 100 m depth.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Castle, P.H.J., 1986. Congridae. p. 161-165. In M.M. Smith and P.C. Heemstra (eds.) Smiths' sea fishes. Springer-Verlag, Berlin. (Ref. 5323)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 123416)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 13.7 - 18.1, mean 15.7 °C (based on 10 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00062 (0.00028 - 0.00135), b=3.19 (3.00 - 3.38), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.5 ±0.50 se; based on food items.
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low to moderate vulnerability (29 of 100) .