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Anotopterus nikparini Kukuev, 1998

North Pacific daggertooth
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Anotopterus nikparini   AquaMaps   Data sources: GBIF OBIS
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Image of Anotopterus nikparini (North Pacific daggertooth)
Anotopterus nikparini
Picture by Orlov, A.

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

Teleostei (teleosts) > Aulopiformes (Grinners) > Anotopteridae (Daggertooth)
Etymology: Anotopterus: Greek, a = without + Greek, noton = back + Greek, pteron = fin (Ref. 45335);  nikparini: Named for Nikolai V. Parin..

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

Marine; bathypelagic; depth range 0 - 2750 m (Ref. 31260), usually 0 - 700 m (Ref. 31260). Temperate

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

North Pacific: Bering Sea and Gulf of Alaska; south in Pacific waters to about 25°N, south of Baja California and Japan.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 146 cm TL male/unsexed; (Ref. 6885); max. published weight: 1.7 kg (Ref. 6885)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 0; Dorsal soft rays (total): 0; Anal spines: 0; Anal soft rays: 14 - 17; Vertebrae: 78 - 80. Dark brownish, silvery ventrally; paired fins and caudal fin uniformly black. Body extremely elongate. Large adults with a pair of dermal keels midlaterally on each side. Small, flexible projection at tip of lower jaw. Gill membranes joined forward, below anterior edge of eye, and free from isthmus. No rayed dorsal fin. No scales (Ref. 43939). In adults, head depth 29-33% of lower jaw length. Postorbital area 8.1-9.7% SL or 34.4-38.8% (less than 3 times smaller than HL). Rear edge of gill cover overlaps with the vertical of the 5th vertebrae. Postadipose distance 7-8% SL (Ref. 31260).

Biology     Glossary (e.g. epibenthic)

Found in a wide range of depths, sometimes near surface (Ref. 2850) to below 2,000 m. Larger adults inhabit colder water toward the poles, whereas, the young and smaller adults inhabit more temperate regions (Ref. 35956). Feed on mollusks, crustaceans, marine worms, coelenterates, salps, and fishes (Ref. 4525, 6885). Its distensible body wall and large stomach can accommodate prey up to half of its own length. Oviparous, with planktonic larvae (Ref. 35956). Preyed upon by albacore, Pacific lancetfish, halibut, steelhead salmon, blue shark, pomfret, and whales (Ref. 6885).

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

Oviparous (Ref. 35956).

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

Kukuev, E.I., 1998. Systematics and distribution in the world ocean of daggertooth fishes of the genus Anotopterus (Anotopteridae, Aulopiformes). J. Ichthyol. 38(9):716-729. (Ref. 31260)

IUCN Red List Status (Ref. 130435)

  Least Concern (LC) ; Date assessed: 12 October 2018

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
Population dynamics
Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversions
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Abundances
Life cycle
Reproduction
Maturities
Fecundities
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Egg(s)
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Distribution
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BRUVS - Videos
Anatomy
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Physiology
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Swimming type
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Visual pigment(s)
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Toxicities (LC50s)
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Genetics
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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): 1.4 - 15.3, mean 5.7 °C (based on 3019 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.7500   [Uniqueness, from 0.5 = low to 2.0 = high].
Trophic level (Ref. 69278):  4.5   ±0.5 se; based on diet studies.
Generation time: 2.2 ( na - na) years. Estimated as median ln(3)/K based on 1 growth studies.
Resilience (Ref. 120179):  Medium, minimum population doubling time 1.4 - 4.4 years (K=0.5).
Fishing Vulnerability (Ref. 59153):  Very high vulnerability (88 of 100).