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Nezumia micronychodon Iwamoto, 1970

Smalltooth grenadier
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Nezumia micronychodon   AquaMaps   Data sources: GBIF OBIS
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Image of Nezumia micronychodon (Smalltooth grenadier)
Nezumia micronychodon
Picture by FAO

Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Teleostei (teleosts) > Gadiformes (Cods) > Macrouridae (Grenadiers or rattails)
Etymology: Nezumia: A Japanese word that means "mouse" .
More on author: Iwamoto.

Environment: milieu / climate zone / depth range / distribution range Ecology

Marine; bathydemersal; non-migratory; depth range 366 - 1620 m (Ref. 1371), usually 500 - 600 m (Ref. 1371). Deep-water; 24°N - 17°S, 22°W - 13°E (Ref. 1371)

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Eastern Central Atlantic: Western Sahara south to Angola.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 34.0 cm TL male/unsexed; (Ref. 1371)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 2; Dorsal soft rays (total): 140 - 141. Head large; eyes also large; snout short, narrow, bluntly acute, with a small bifid scute at its tip. Head completely scaled except for underside of snout. Body tapering to a point posteriorly from behind the origin of the first dorsal fin base. Pyloric caeca 20. Spinules on scales broad, shield-shaped. Overall color is brownish to swarthy; trunk bluish to violet; fins blackish; mouth and gill cavities gray to blackish.

Biology     Glossary (e.g. epibenthic)

Specimens from northwestern Africa feed primarily on faunal organisms, especially polychaetes (90% of contents) and a variety of small crustaceans. Smaller individuals (30-40 mm head length) feed mostly on epibenthic organisms, especially the copepod Aetidopsis carinata (Ref. 6219).

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae

Main reference Upload your references | References | Coordinator : Iwamoto, Tomio | Collaborators

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. 130435)

  Least Concern (LC) ; Date assessed: 11 July 2012

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

FAO - Publication: search | FishSource |

More information

Trophic ecology
Food items
Diet compositions
Food consumptions
Food rations
Predators
Ecology
Ecology
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Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
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Life cycle
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Fecundities
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Egg(s)
Egg developments
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Distribution
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BRUVS - Videos
Anatomy
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Genetics
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References
References

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Summary page | Point data | Common names | Photos

Internet sources

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: genus, species | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genome, nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: Go, Search | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates based on models

Preferred temperature (Ref. 123201): 6.2 - 8.7, mean 6.8 °C (based on 8 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00219 (0.00111 - 0.00431), b=3.20 (3.03 - 3.37), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic level (Ref. 69278):  3.2   ±0.31 se; based on food items.
Resilience (Ref. 120179):  Low, minimum population doubling time 4.5 - 14 years (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (24 of 100).