Alaska country information

Common names: [No common name]
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Reported from the Aleutian Is. (Ref. 6876) and southeastern Alaska (Ref. 6885).
National Checklist:
Country Information:
National Fisheries Authority: http://www.state.ak.us/local/akpages/FISH.GAME/adfghome.htm
Occurrences: Occurrences Point map
Main Ref: Quast, J.C. and E.L. Hall, 1972
National Database:

Common names from other countries

Daggertooth, Daga, Mizu-uodamashi, ... more

Classification / Names Nomi Comuni | Sinonimi | Catalog of Fishes(Genere, Specie) | ITIS | CoL | WoRMS | Cloffa

> 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 Ecologia

marino batipelagico; distribuzione batimetrica 0 - 2750 m (Ref. 31260), usually 0 - 700 m (Ref. 31260). Temperate

Distribuzione Stati | Aree FAO | Ecosystems | Presenze | Point map | Introduzioni | Faunafri

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

Size / Peso / Age

Maturity: L_m ? range ? - ? cm
Max length : 146 cm TL maschio/sesso non determinato; (Ref. 6885); peso massimo pubblicato: 1.7 kg (Ref. 6885)

Short description Morfologia | Morfometria

Spine dorsali (totale): 0; Raggi dorsali molli (totale): 0; Spine anali 0; Raggi anali molli: 14 - 17; Vertebre: 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).

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 Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve

Oviparous (Ref. 35956).

Main reference Upload your references | Bibliografia | Coordinatore : Thompson, Bruce | Collaboratori

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 (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO(Publication : search) | FishSource |

Informazioni ulteriori

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Nomi Comuni
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Age/Size
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Fonti Internet

Estimates based on models

Preferred temperature (Ref. 115969): 1.4 - 15.3, mean 5.7 (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.

Resilienza (Ref. 120179): Medio, tempo minimo di raddoppiamento della popolazione 1.4 - 4.4 anni (K=0.5).

Fishing Vulnerability (Ref. 59153): Very high vulnerability (88 of 100).

Anotopterus nikparini Kukuev, 1998