Actinopteri (ray-finned fishes) > Gadiformes
(Cods) > Macrouridae
(Grenadiers or rattails)
Etymology: Cetonurus: Greek, ketos = a marine monster, whale + Greek, oura = tail (Ref. 45335). More on author: Vaillant.
Environment: milieu / climate zone / depth range / distribution range
Marine; bathypelagic; depth range 860 - 4621 m (Ref. 11953), usually 1000 - 2000 m (Ref. 3587). Deep-water; 0°C -
Atlantic and Pacific: Eastern Atlantic: Bay of Biscay, Azores, off Mauritania, Senegal, and Canary Islands, Western Atlantic: Gulf of Mexico, east Caribbean. Western Pacific: Off Japan and Indonesia.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 50.0 cm TL male/unsexed; (Ref. 3587)
Morphology | Morphometrics
(total): 9-12. Band of small pointed teeth in both jaws. Body color brown to dark brown, gular and branchiostegal membrane darker. Membranes of mouth, gill cavities and body cavity blackish (Ref. 37108).
Feeds on small fishes and planktonic crustaceans (Ref. 6187).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Iwamoto, T. and A. Williams, 1999. Grenadiers (Pisces, Gadiformes) from the continental slope of western and northwestern Australia. Proc. Calif. Acad. Sci. 51(3):105-243. (Ref. 35909)
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
): 2.3 - 6, mean 3.7 °C (based on 2783 cells).
Phylogenetic diversity index (Ref. 82805
= 0.7500 [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
): 3.9 ±0.60 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) .