Actinopteri (ray-finned fishes) > Anguilliformes
(Eels and morays) > Congridae
(Conger and garden eels) > Congrinae
Etymology: Conger: Latin, conger = conger (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Marine; bathydemersal; oceanodromous (Ref. 51243); depth range 320 - 830 m (Ref. 54340), usually - m (Ref. ). Temperate; 0°C - ; 46°N - 19°N, 113°E - 143°E (Ref. 54340)
Northwest Pacific: Japan, Korean Peninsula and the East China Sea.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 100.0 cm TL male/unsexed; (Ref. 559); max. reported age: 8 years (Ref. 72462)
Morphology | Morphometrics
Vertebrae: 142 - 148. Head and body with white spots. Lower jaw moderate in size, premaxillary teeth not exposed when closed. Upper lip groove deep (appearing folded up). Maxillary teeth arranged in almost 1 row. Preanal lateral line pores 39-43 (Ref. 41299).
Common on coasts of Japan, in sandy-muddy bottoms (also Ref. 11230); most relished among the congrids. Captured and cultured for fishery in Japan.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Masuda, H., K. Amaoka, C. Araga, T. Uyeno and T. Yoshino, 1984. The fishes of the Japanese Archipelago. Vol. 1. Tokai University Press, Tokyo, Japan. 437 p. (text). (Ref. 559)
IUCN Red List Status (Ref. 124695)
Threat to humans
Fisheries: highly commercial
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 0.5 - 13.5, mean 8.8 °C (based on 41 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00058 (0.00036 - 0.00092), b=3.23 (3.10 - 3.36), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245
Trophic level (Ref. 69278
): 4.0 ±0.68 se; based on food items.
Generation time: 5.8 ( na - na) years. Estimated as median ln(3)/K based on 1 growth studies.
Resilience (Ref. 120179
): Medium, minimum population doubling time 1.4 - 4.4 years (Assuming tm>4).
Prior r = 0.51, 95% CL = 0.33 - 0.76, Based on 1 stock assessment.
Vulnerability (Ref. 59153
): Moderate to high vulnerability (53 of 100) .
Nutrients (Ref. 124155
): Calcium = 32.7 [19.5, 56.3] mg/100g ; Iron = 0.24 [0.16, 0.38] mg/100g ; Protein = 19.4 [16.4, 21.9] % ; Omega3 = 0.523 [0.262, 1.281] g/100g ; Selenium = 28.2 [15.2, 54.1] μg/100g ; VitaminA = 7.63 [2.26, 24.30] μg/100g ; Zinc = 0.446 [0.331, 0.615] mg/100g (wet weight);