Actinopteri (ray-finned fishes) > Anguilliformes
(Eels and morays) > Congridae
(Conger and garden eels) > Heterocongrinae
Etymology: Heteroconger: Greek, heteros = other + Latin, conger = conger (Ref. 45335). More on author: Günther.
Environment: milieu / climate zone / depth range / distribution range
Marine; reef-associated; non-migratory; depth range 10 - 60 m (Ref. 26938), usually 20 - 60 m (Ref. 7251). Tropical; 0°C -
Eastern Atlantic: known only from Madeira, Canary Islands and Senegal. Western Atlantic: Bahamas, Florida keys, Antilles, Yucatan, Belize and Honduras (Ref. 26938); extending to Brazil (Ref. 40101).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 51.0 cm TL male/unsexed; (Ref. 7251)
Morphology | Morphometrics
Eye large. Lower jaw longer than upper; 157 to 165 vertebrae (Ref. 26938).
Found on sandy bottom, living in colonies (Ref. 26938). Feed on plankton and detritus (Ref. 26938). They retreat into burrow when frightened (Ref. 9710). Probably spawn during warm season (Ref. 6521). Larval life spans 6-8 months (Ref. 6521).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Smith, D.G., 1990. Congridae. p. 156-167. 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. 1. (Ref. 4453)
IUCN Red List Status (Ref. 124695)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 21 - 27.7, mean 25.5 °C (based on 378 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [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), in cm total length, based on all LWR estimates for this body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.1 ±0.1 se; based on diet studies.
Resilience (Ref. 120179
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low to moderate vulnerability (35 of 100) .
Nutrients (Ref. 124155
): Calcium = 47.1 [26.2, 80.6] mg/100g ; Iron = 0.68 [0.45, 1.07] mg/100g ; Protein = 19.1 [15.9, 21.7] % ; Omega3 = 0.124 [0.057, 0.313] g/100g ; Selenium = 46.2 [23.7, 84.5] μg/100g ; VitaminA = 60.2 [17.3, 196.3] μg/100g ; Zinc = 1.11 [0.77, 1.57] mg/100g (wet weight);