Nezumia stelgidolepis  (Gilbert, 1890)

California grenadier
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Nezumia stelgidolepis   AquaMaps   Data sources: GBIF OBIS
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Image of Nezumia stelgidolepis (California grenadier)
Nezumia stelgidolepis
Picture by Canadian Museum of Nature, Ottawa, Canada

Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Gadiformes (Cods) > Macrouridae (Grenadiers or rattails) > Macrourinae
Etymology: Nezumia: A Japanese word that means "mouse" ;  stelgidolepis: stelgidolepis meaning scraper scale, referring to the rasplike scales that cover the body (Ref. 4525).

Environment / Climate / Range Ecology

Marine; bathydemersal; non-migratory; depth range 277 - 909 m (Ref. 1371).   Deep-water; 49°N - 16°S, 130°W - 76°W (Ref. 1371)

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 45.0 cm TL male/unsexed; (Ref. 1371)

Short description Morphology | Morphometrics

Dorsal spines (total): 2; Anal spines: 0. Snout short, narrow, bluntly pointed; terminal snout scute developed but not conspicuously; suborbital ridge low; underside of snout, most of the suborbital region, and anterior half of mandible without scales; cephalic pores of the lateralis system prominent. Pyloric caeca 24 to 58. Body scales densely covered with conical to narrowly lanceolate spinules in short, slightly convergent rows. Overall color is swarthy, blackish ventrally, with bluish tinge on abdominal region; oral and branchial cavities generally pale with some blackish areas; fins dusky to blackish, first dorsal fin slightly paler basally.

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

Eastern Pacific: off Vancouver Island, Canada to southern Peru.

Biology     Glossary (e.g. epibenthic)

Food items are generally forcibly regurgitated by the fish's expunging gas bladder as it is hauled from the depths, but fish remains have been caught inside the mouth of a few individuals. Considered opportunistic feeders and will eat whatever animal food they encounter in the natural habitat as long as it is of appropriate size (Ref. 4525).

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. 90363)

CITES (Ref. 94142)

Not Evaluated

Threat to humans

  Harmless




Human uses

Fisheries: minor commercial
FAO(Publication : search) | FisheriesWiki | Sea Around Us

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Internet sources

BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | Faunafri | Fishtrace | GenBank(genome, nucleotide) | GOBASE | Google Books | Google Scholar | Google | IGFA World Record | iSpecies | PubMed | Scirus | SeaLifeBase | Tree of Life | uBio | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoological Record

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00251 (0.00126 - 0.00499), b=3.17 (2.99 - 3.35), based on LWR estimates for this Subfamily-body shape (Ref. 93245).
Trophic Level (Ref. 69278):  4.4   ±0.80 se; Based on food items.
Resilience (Ref. 69278):  Medium, minimum population doubling time 1.4 - 4.4 years (K=0.20).
Vulnerability (Ref. 59153):  Moderate to high vulnerability (48 of 100) .
Price category (Ref. 80766):   Medium.