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Cynoscion nothus (Holbrook, 1848)

Silver seatrout
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Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Cynoscion nothus   AquaMaps   Data sources: GBIF OBIS
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Cynoscion nothus
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United States (contiguous states) country information

Common names: Bastard trout, Gray trout, Sand trout
Occurrence: native
Salinity: brackish
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments:
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: Robins, C.R. and G.C. Ray, 1986
National Database:

Common names from other countries

分類 / Names 俗名 | 同種異名 | Catalog of Fishes(, ) | ITIS | CoL | WoRMS | Cloffa

Teleostei > Eupercaria/misc (Various families in series Eupercaria) 鱸形目 (Various families in series Eupercaria) > Sciaenidae (Drums or croakers) 石首魚科 (Drums or croakers)
Etymology: Cynoscion: Greek, kyon = dog + Greek, odous = teeth + Greek, skion, skiaina = barbel, red mullet (Ref. 45335).

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

海洋; 半鹹淡水 居於水底的; 深度上下限 2 - 18 m (Ref. 1183).   亞熱帶的; 39°N - 9°N, 98°W - 59°W

分布 國家 | FAO區域 | 生態系 | 發現紀錄 | Point map | 簡介 | Faunafri

Western Atlantic: Maryland to northeastern Florida in the USA and throughout Gulf of Mexico. Reported from Campeche Bank in Mexico (Ref. 5733). Often misidentified as Cynoscion regalis (Ref. 3702).
西大西洋: 到在美國的佛羅里達東北方的馬里蘭與在墨西哥灣各處。 記錄來自在墨西哥的 Campeche 堤岸了。 (參考文獻 5733) 時常被誤鑑成 Cynoscion regalis 。 (參考文獻 3702)

Length at first maturity / 大小 / 重量 / 年齡

Maturity: Lm 15.8, range 14 - 17 cm
Max length : 36.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 3702); common length : 25.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 3702); 最大年齡: 1.20 年 (Ref. 31629)

簡短描述 檢索表 | 型態特徵 | 形態測量圖

背棘 (總數) : 11; 背的軟條 (總數) : 26 - 31; 臀棘: 2; 臀鰭軟條: 8 - 11; 脊椎骨: 27. Colour greyish above and changing abruptly to silvery below. Back and upper sides sometimes with very faint irregular rows of spots. Dorsal fin dusky, other fins pale to yellowish. Mouth large, oblique, lower jaw projecting. Upper jaw with a pair of large canine-like teeth at tip. Lower jaw with a row of sharp enlarged inner-row teeth, widely spaced. Chin without barbels or pores. Snout with 2 marginal pores. Gas bladder with a pair of straight, horn-like anterior appendages. Soft portion of dorsal fin covered with small scales on basal half of in (Ref 51721).
顏色略灰色的上方而且突然地改變到下面銀色的。 背面與上側面有時有非常模糊的不規則的斑點列。 背鰭暗色又其他的鰭灰白的到淡黃色的。 嘴大的, 斜的, 下頜突出的。 在頂端上頜有一對大的像犬齒一樣的齒。 下頜有一列銳利的增大內部-列齒, 空隙大的。 沒有觸鬚或孔的下巴。 吻部有 2個邊緣的孔。 氣鰾有一對直線,像觸角一樣的前肢。 背鰭的柔軟部位覆蓋著小鱗片了基部之上一半的在 (參考文獻 51721).

生物學特性     字彙 (例如 epibenthic)

Occurs usually over sandy bottoms in inshore waters along beaches and in river mouths. Feeds mainly on crustaceans and fishes.

沿著海灘在近岸水域通常生活在砂質底部之上與在河口中。 主要吃甲殼動物和魚類。

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

西大西洋: 到在美國的佛羅里達東北方的馬里蘭與在墨西哥灣各處。 記錄來自在墨西哥的 Campeche 堤岸了。 (參考文獻 5733) 時常被誤鑑成 Cynoscion regalis 。 (參考文獻 3702)

主要參考資料 Upload your references | 參考文獻 | 合作者 | 合作者

Robins, C.R. and G.C. Ray, 1986. A field guide to Atlantic coast fishes of North America. Houghton Mifflin Company, Boston, U.S.A. 354 p. (Ref. 7251)

IUCN 瀕危狀態 (Ref. 130435)

  無危 (LC) ; Date assessed: 15 October 2019

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

對人類具威脅

  無害處的




人類使用

漁業: 低經濟
FAO(Publication : search) | FishSource | 周邊海洋

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Estimates based on models

Preferred temperature (Ref. 115969): 23.4 - 28, mean 26.8 (based on 492 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01230 (0.00776 - 0.01949), b=3.01 (2.88 - 3.14), in cm Total Length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).
營養階層 (Ref. 69278):  4.0   ±0.60 se; based on food items.
回復力 (Ref. 120179):  中等的, 族群倍增時間最少 1.4 - 4.4年 (K=0.22).
Fishing Vulnerability (Ref. 59153):  Moderate vulnerability (38 of 100).
價格種類 (Ref. 80766):   Medium.