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Arctozenus risso  (Bonaparte, 1840)

Spotted barracudina
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Arctozenus risso
Picture by Dolgov, A.

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

Actinopterygii (ray-finned fishes) > Aulopiformes (Grinners) > Paralepididae (Barracudinas)
Etymology: Arctozenus: Greek, arktos = bear + particle zen, derived from zao = to give life;  risso: Named after A. Risso, European ichthyologist (Ref. 6885).

Environment / Climate / Range Ecology

Marine; bathypelagic; depth range 0 - 2200 m (Ref. 50610).   Deep-water; 71°N - 55°S, 180°W - 180°E

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 30.0 cm SL male/unsexed; (Ref. 35388); common length : 25.0 cm SL male/unsexed; (Ref. 4473)

Short description Morphology | Morphometrics

Dorsal spines (total): 0; Dorsal soft rays (total): 8-13; Anal spines: 0; Anal soft rays: 28 - 34; Vertebrae: 72 - 86. Bright silvery in color (Ref. 6885). Branchiostegal rays: 8 (Ref. 35950).

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

Worldwide distribution from the Arctic to Antarctic. Eastern Pacific: British Columbia (55°N) to at least north central Baja California (28°N) (Ref. 35950). Northwest Pacific: Bering Sea, Kamchatka, Kuril Islands (Ref. 41668).

Biology     Glossary (e.g. epibenthic)

Pseudoceanic and mesopelagic, occurring singly or in small schools (Ref. 5759), primarily at 200-1000 (Ref. 58302). Feed mainly on fishes and shrimps (Ref. 5759). Spawn in continental slopes and in oceanic banks from northern through tropical to southern temperate waters. Oviparous, with planktonic larvae (Ref. 35950).

Main reference Upload your references | References | Coordinator : Thompson, Bruce | Collaborators

Post, A., 1990. Paralepididae. p. 373-384. In J.C. Quero, J.C. Hureau, C. Karrer, A. Post and L. Saldanha (eds.) Check-list of the fishes of the eastern tropical Atlantic (CLOFETA). JNICT, Lisbon; SEI, Paris; and UNESCO, Paris. Vol. 1.

IUCN Red List Status (Ref. 90363)

CITES (Ref. 94142)

Not Evaluated

Threat to humans

  Harmless




Human uses

Fisheries: of no interest
FAO(Publication : search) | FisheriesWiki | Sea Around Us

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Internet sources

BHL | Cloffa | BOLDSystems | 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 | National databases | PubMed | Scirus | SeaLifeBase | Tree of Life | uBio | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoological Record

Estimates of some properties based on empirical models

Phylogenetic diversity index (Ref. 82805):  PD50 = 1.0000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00324 (0.00122 - 0.00862), b=3.08 (2.85 - 3.31), based on LWR estimates for this Subfamily-BS (Ref. 93245).
Trophic Level (Ref. 69278):  3.2   ±0.4 se; Based on diet studies.
Resilience (Ref. 69278):  Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153):  Low to moderate vulnerability (34 of 100) .
Price category (Ref. 80766):   Unknown.