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Thaleichthys pacificus (Richardson, 1836)

Eulachon
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Native range | All suitable habitat | Point map | Year 2050
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Thaleichthys pacificus   AquaMaps   Data sources: GBIF OBIS
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Thaleichthys pacificus
Picture by Bull. U.S. Bur. Fish.


United States (contiguous states) country information

Common names: Candlefish, Cikeq, Columbia River smelt
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: commercial | Ref: Morrow, J.E., 1980
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Known from the Pacific coast from Washington to Monterey Bay, California (Ref. 86798). Seasonally abundant in spawning streams (Ref. 27547). Also Ref. 276, 1998, 6793, 6885, 27436, 95155.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/us.html
National Fisheries Authority: http://www.nmfs.gov
Occurrences: Occurrences Point map
Main Ref: Page, L.M. and B.M. Burr, 2011
National Database:

Common names from other countries

分類 / Names 共通名の | 類義語 | Catalog of Fishes(部類, ) | ITIS | CoL | WoRMS | Cloffa

> Osmeriformes (Freshwater smelts) > Osmeridae (Smelts)
Etymology: Thaleichthys: Greek, thaleia, -as = abundance + Greek, ichthys = fish (Ref. 45335);  pacificus: pacificus - of the Pacific (Ref. 1998).
  More on author: Richardson.

Environment: milieu / climate zone / depth range / distribution range 生態学

; 新鮮な水; 汽水性の; 昇流魚 (Ref. 51243); 深さの範囲 0 - 300 m (Ref. 6793).   Temperate; 61°N - 40°N, 171°W - 121°W (Ref. 86798)

分布 国々 | 国連食糧農業機関の区域 | エコシステム | 事件 | Point map | 導入 | Faunafri

North Pacific: west of Saint Matthew Island and Kuskokwim Bay in the Bering Sea, and Bowers Bank in the Aleutian Islands to Monterey Bay, California, USA. Populations from northern British Columbia are separate from those in the Fraser River (Ref. 10276).

Length at first maturity / サイズ / 重さ / 年齢

Maturity: Lm 15.5, range 15 - 16 cm
Max length : 34.0 cm TL オス/雌雄の選別がない; (Ref. 56527); common length : 20.0 cm TL オス/雌雄の選別がない; (Ref. 7354); 最大記録サイズ: 5 年 (Ref. 12193)

簡単な記述 検索表 | 形態学 | 形態計測学

背面の脊椎 (合計) : 0; 背鰭 (合計) : 10 - 13; 肛門の骨: 0; 臀鰭: 18 - 23; 脊つい: 65 - 72. Distinguished by the large canine teeth on the vomer and 18 to 23 rays in the anal fin (Ref. 27547). Adipose fin sickle-shaped; paired fins longer in males than in females; all fins with well developed breeding tubercles in ripe males which are poorly developed or absent in females (Ref. 27547). Adult coloration is brown to blue on back and top of the head, the sides lighter to silvery white, and the ventral surface white; speckling is fine, sparse and restricted to the back; peritoneum is light with black speckles (Ref. 6885). Fins transparent, pectorals and caudal often dusky (Ref. 27547). During spawning, male fish has a distinctly raised ridge along the middle of the body and a rough texture, differentiating it from the female which is smaller, smoother and shinier.

生物学     用語集 (例 epibenthic)

Found near shore and in coastal inlets and rivers (Ref. 2850). Possibly to 625 m depth (Ref. 6793). Spends most of its life in the sea, returning to freshwater streams to spawn (Ref. 27547). There is evidence of return to natal streams (Ref. 10276). May migrate up to 160 km upstream. Feeds on plankton and only while at sea (11699, 10276). Excellent food fish and source of oil (15% body wt.). Anadromous (Ref. 96339).

Life cycle and mating behavior Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 幼生

The spawning run from the sea to freshwater streams begins when river temperature rises to about 4.4° but the fish stop running if temperature exceeds 7.8°C. Males predominate the early part of the run, but their numbers are equalled or exceeded by females later (Ref. 10276, 11699). Adults usually die after spawning but some move back to the sea and return to spawn a second time (Ref. 1998). Upon hatching, larvae are found near the bottom and are soon carried downstream to salt water and eventually found in the scattering layer of coastal waters (Ref. 27547).

主な参考文献 Upload your references | 参考文献 | コーディネーター | 協力者

Eschmeyer, W.N., E.S. Herald and H. Hammann, 1983. A field guide to Pacific coast fishes of North America. Boston (MA, USA): Houghton Mifflin Company. xii+336 p. (Ref. 2850)

IUCNのレッドリストの状況は (Ref. 130435)

  軽度懸念 (LC) ; Date assessed: 01 March 2012

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

人間に対する脅威

  Harmless




Human uses

水産業: 商業
FAO(水産業: 代謝; publication : search) | FishSource | 私達の周りの海

より多くの情報

Trophic ecology
食品種目概要について
Diet compositions
Food consumptions
Food rations
捕食動物
Ecology
生態学
Home ranges
Population dynamics
Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
体長組成
Mass conversions
Recruitments
Abundances
Life cycle
繁殖
Maturities
Fecundities
Spawnings
Spawning aggregations
Egg(s)
Egg developments
幼生
幼生の動力
Anatomy
Gill areas

Otoliths
Physiology
Body compositions
Nutrients
Oxygen consumptions
水泳形態
Swimming speeds
Visual pigment(s)
魚の音
Diseases / Parasites
Toxicities (LC50s)
Genetics
遺伝子の
Electrophoreses
Heritabilities
Human related
Aquaculture systems
水産養殖の紹介
緊張
Ciguatera cases
Stamps, coins, misc.
Outreach
協力者
References
参考文献

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インターネットの情報源

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Estimates based on models

Preferred temperature (Ref. 115969): 1.3 - 8.6, mean 4.2 (based on 403 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 1.0000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00372 (0.00182 - 0.00758), b=3.17 (2.99 - 3.35), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
栄養段階 (Ref. 69278):  3.3   ±0.37 se; based on food items.
回復力 (Ref. 120179):  手段, 1.4年~4.4年の倍増期間の最小個体群 (tm=2-6; tmax=5; K=0.34; Fec=17,000-60,000 Musick et al. 2000 (Ref. 36717)).
Prior r = 0.15, 95% CL = 0.10 - 0.22, Based on 1 full stock assessment.
Fishing Vulnerability (Ref. 59153):  Low to moderate vulnerability (33 of 100).
Climate Vulnerability (Ref. 125649):  Moderate vulnerability (35 of 100).
価格帯 (Ref. 80766):   Very high.