Actinopteri (ray-finned fishes) > Gadiformes
(Cods) > Macrouridae
(Grenadiers or rattails)
Etymology: Coelorinchus: Greek, koilos = a hollow + Greek, rhyngchos = jaw (Ref. 45335). More on authors: Goode & Bean.
Environment: milieu / climate zone / depth range / distribution range
Marine; bathydemersal; non-migratory; depth range 400 - 2220 m (Ref. 3587), usually - m (Ref. ). Deep-water; 0°C - ; 34°N - 7°N, 98°W - 52°W (Ref. 1371)
Atlantic: Western Central Atlantic: Florida Straits to northeastern South America. One record from Bermuda. Eastern Atlantic: Faroe Channel to Cape Verde (Ref. 3587); southern Africa.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 50.0 cm TL male/unsexed; (Ref. 1371)
Morphology | Morphometrics
spines: 0. Snout long and sharply pointed, its anterolateral margin almost completely supported by bone; head ridges strong and coarsely spined; the dorsal surfaces of the head completely scaled except for the nasal fossa, scales atop head with spinules set in divergent rows; the underside of the head naked except for small isolated scales above the angle of the mouth and below the end of the opercle ridge in some specimens; swarthy to brownish, ventrally darker on the belly, with no prominent markings; the mouth and gill cavities blackish; the first dorsal fin uniformly dusky (Ref. 1371).
Size may exceed 50 cm TL. Feeds primarily on small fish (myctophids), polychaete worms and crustaceans (pagurids, crabs, shrimps, ostracods, and copepods (Ref. 6187).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Cohen, D.M., T. Inada, T. Iwamoto and N. Scialabba, 1990. FAO species catalogue. Vol. 10. Gadiform fishes of the world (Order Gadiformes). An annotated and illustrated catalogue of cods, hakes, grenadiers and other gadiform fishes known to date. FAO Fish. Synop. 125(10). Rome: FAO. 442 p. (Ref. 1371)
IUCN Red List Status (Ref. 124695)
Threat to humans
Fisheries: subsistence fisheries
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 4.6 - 9.9, mean 5.9 °C (based on 199 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00209 (0.00101 - 0.00430), b=3.19 (3.01 - 3.37), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.6 ±0.48 se; based on food items.
Resilience (Ref. 120179
): Very Low, minimum population doubling time more than 14 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Moderate to high vulnerability (55 of 100) .