Actinopteri (ray-finned fishes) > Anguilliformes
(Eels and morays) > Muraenesocidae
Etymology: Congresox: Latin, conger = conger + Esox = old name for "pike" (Ref. 45335).
More on author: Cuvier.
Environment: milieu / climate zone / depth range / distribution range
Marine; brackish; demersal; amphidromous (Ref. 51243); depth range 0 - 100 m (Ref. 9830). Tropical; 30°N - 11°S, 49°E - 127°E
Indo-West Pacific: Sri Lanka and the Bay of Bengal to Indonesia.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 80.0 cm TL male/unsexed; (Ref. 7238); common length : 50.0 cm TL male/unsexed; (Ref. 7238)
Vertebrae: 143 - 149. Mouth very large, upper jaw reaches well behind eye (Ref. 4832). Length of pectoral fin about 3.2 in head; lateral line pores before anus 41-42; dorsal fin rays before anus 70-75 (Ref. 9830). Dorsal fin inserted before gill-openings (Ref. 4832).
Found in coastal waters and in estuaries, over soft bottoms. Nocturnal, feeding mainly on bottom fishes and crustaceans. Marketed mainly fresh; no separate statistics available (Ref. 7238; 9830). Minimum depth assumed from its ecology.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Castle, P.H.J., 1984. Muraenesocidae. In W. Fischer and G. Bianchi (eds.) FAO species identification sheets for fishery purposes. Western Indian Ocean (Fishing Area 51). Volume III. FAO, Rome. (Ref. 7238)
IUCN Red List Status (Ref. 125652)
Threat to humans
Fisheries: minor commercial
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 25 - 29.1, mean 28.4 °C (based on 1220 cells).
Phylogenetic diversity index (Ref. 82805
= 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00129 (0.00055 - 0.00300), b=2.93 (2.73 - 3.13), in cm total length, based on LWR estimates for this Subfamily-BS (Ref. 93245
Trophic level (Ref. 69278
): 4.0 ±0.66 se; based on food items.
Resilience (Ref. 120179
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153
): Moderate to high vulnerability (52 of 100) .
Climate Vulnerability (Ref. 125649
): (0 of 100) .
Nutrients (Ref. 124155
): Calcium = 146 [84, 255] mg/100g ; Iron = 0.797 [0.504, 1.376] mg/100g ; Protein = 17.9 [15.7, 20.2] % ; Omega3 = 0.45 [0.18, 1.29] g/100g ; Selenium = 84.2 [38.8, 180.4] μg/100g ; VitaminA = 20.5 [6.0, 66.6] μg/100g ; Zinc = 1.16 [0.80, 1.68] mg/100g (wet weight);