Actinopteri (ray-finned fishes) > Gadiformes
(Cods) > Macrouridae
(Grenadiers or rattails)
Etymology: Kuronezumia: Japanese, kuronezumia = black mouse or rat. Personnal communication of Tomio I. Curator in the Calif. Academy of Sciences, Ichthyology..
More on author: Iwamoto.
Environment: milieu / climate zone / depth range / distribution range
Marine; benthopelagic; depth range 585 - 1300 m (Ref. 58302). Deep-water
Western Atlantic, Western Indian Ocean, and the Pacific Ocean.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 60.0 cm TL male/unsexed; (Ref. 11953)
Morphology | Morphometrics
No enlarged scutes at snout tip; suborbital ridge not developed; underside of snout narrowly naked along upper lip; 1-2 scales on branchiostegal membrane; ventral light organ very large (Ref. 13608).
A benthic species found on the continental slope (Ref. 75154).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Iwamoto, T. and E. Anderson, 1994. Review of the grenadiers (Teleostei: Gadiformes) of southern Africa, with descriptions of four new species. Ichthyol. Bull. J.L.B. Smith Inst. Ichthyol. (61):1-28. (Ref. 11953)
IUCN Red List Status (Ref. 125652)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 123201
): 2.5 - 9.5, mean 6.1 °C (based on 370 cells).
Phylogenetic diversity index (Ref. 82804
= 0.5312 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00214 (0.00107 - 0.00428), b=3.18 (3.01 - 3.35), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.6 ±0.5 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): Very Low, minimum population doubling time more than 14 years (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153
): Moderate vulnerability (44 of 100).