Teleostei (teleosts) > Gadiformes
(Cods) > Macrouridae
(Grenadiers or rattails)
Etymology: Kumba: Named for the Marine Biological Association of the United Kingdom, whose research vessel Sarsia dredged the type species.; gymnorhynchus: From the Greek word 'gymnos' meaning naked and 'rhynchos' or snout (noun in apposition)..
More on authors: Iwamoto & Sazonov.
Environment: milieu / climate zone / depth range / distribution range
Marine; bathypelagic; depth range 1260 - 1370 m (Ref. 11651). Deep-water; 30°S - 31°S
Eastern Indian Ocean: West Australian Ridge (Broken Ridge).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 49.6 cm TL male/unsexed; (Ref. 11651)
Morphology | Morphometrics
(total): 2. Firm head, not inflated with sensory canals lacking pores. Dorsally scaleless snout extend to
lateral nasal angles but not onto the forehead. Orbit diameter about 26% of head length; snout slightly longer than orbit; interorbital about equal to the orbit; upper jaw 40-43% HL; short barbel, about 7% HL. 1D II,10 (Ref. 11651).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Iwamoto, T. and Y.I. Sazonov, 1994. Revision of the genus Kumba (Pisces, Gadiformes, Macrouridae), with the description of three new species. Proc. Calif. Acad. Sci. 48(11):221-237. (Ref. 11651)
IUCN Red List Status (Ref. 126983)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82804
= 0.5039 [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 (40 of 100).