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Tylosurus melanotus (Bleeker, 1850)

Keel-jawed needle fish
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Tylosurus melanotus
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Viet Nam country information

Common names: Black-backed needlefish, Cá Nhói lưng đen, Keel-jawed needle fish
Occurrence: native
Salinity: marine
Abundance: occasional (usually not seen) | Ref: Nguyen, H.P. and N.T. Nguyen, 1994
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Known from the Gulf of Tonkin and central Vietnam (Ref. 9706).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/vm.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Duong, T.T., 2001
National Database:

Common names from other countries

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

Teleostei > Beloniformes (Needle fishes) 頜針魚目 (Needle fishes) > Belonidae (Needlefishes) 頜針魚科 (Needlefishes)
Etymology: Tylosurus: Greek, tylos = callus + Greek, oura = tail (Ref. 45335).
  More on author: Bleeker.

Issue
Considered mostly as a subspecies in the literature. Therefore the upraise at species rank here is considered as a provisionally accepted name, until more works are conducted on T. acus susbepcies to fix their status.

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

海洋; 淡水; 半鹹淡水 礁區魚類; 海洋洄游的 (Ref. 51243); 深度上下限 0 - 1 m (Ref. 58302).   熱帶; 32°N - 28°S

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

Indo-Pacific: East Africa (Ref. 3130) to the central and south Pacific. Eastern Central Pacific: oceanic islands such as the Revillagigedo, Clipperton and Cocos (Ref. 9279).
印度-太平洋: 東非 (參考文獻 3130) 到中央與南方的太平洋的。 中太平洋東部: 大洋性島嶼例如雷維拉吉哥多島,克利珀頓島與可可島.(參考文獻 9279)

大小 / 重量 / 年齡

Maturity: Lm ?  range ? - ? cm
Max length : 100.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 9137); common length : 115 cm TL 雄魚/尚未辨別雌雄; (Ref. 5450)

簡短描述 檢索表 | 型態特徵 | 形態測量圖

背棘 (總數) : 0; 背的軟條 (總數) : 24 - 27; 臀棘: 0; 臀鰭軟條: 22 - 24; 脊椎骨: 90 - 95. Anterior part of dorsal fin with a low lobe, contained 10.5-13.3 times in body length; a distinct black lateral keel on caudal peduncle; caudal fin deeply forked. Juveniles have an elevated black lobe in the posterior part of the dorsal fin (Ref. 9682). Longer jaws with more numerous teeth and narrower caudal lobes than T. crocodilus (Ref. 37816).
背鰭前部有被包含 10.5-13.3個倍體長的一個低的葉; 一個明顯的黑色側龍骨在尾梗上; 尾鰭深深地分岔。 稚魚在後面的部分背鰭中有一個升高的黑色葉。 (參考文獻 9682) 超過 T. crocodilus 較長的頜部有眾多的齒與較狹窄的尾葉。 (參考文獻 37816)

生物學特性     字彙 (例如 epibenthic)

Found in offshore and coastal waters. Feeds mainly on small fishes. Marketed mostly fresh. The flesh is of good quality (Ref. 9682). Oviparous (Ref. 205). Eggs may be found attached to objects in the water by tendrils on the egg's surface (Ref. 205).

發現於外海與沿岸水域了。 主要吃小魚。 市場上大部份生鮮地銷售。 肉是有好品質的。 (參考文獻 9682) 卵生的.(參考文獻 205) 卵可能被發現於在卵的表面上的捲鬚水依附於目標。 (參考文獻 205)

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

印度-太平洋: 東非 (參考文獻 3130) 到中央與南方的太平洋的。 中太平洋東部: 大洋性島嶼例如雷維拉吉哥多島,克利珀頓島與可可島.(參考文獻 9279)

主要參考資料 Upload your references | 參考文獻 | 合作者 : Collette, Bruce B. | 合作者

Collette, B.B., 1984. Belonidae. In W. Fischer and G. Bianchi (eds.) FAO species identification sheets for fishery purposes. Western Indian Ocean (Fishing Area 51), Volume 1. FAO, Rome. (Ref. 3130)

IUCN 瀕危狀態 (Ref. 130435)

  未評估 

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

對人類具威脅

  無害處的




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漁業: 商業性
FAO(Publication : search) | FishSource | 周邊海洋

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Estimates based on models

Preferred temperature (Ref. 115969): 28.2 - 29.3, mean 28.8 (based on 979 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = No PD50 data   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00126 (0.00056 - 0.00281), b=3.11 (2.93 - 3.29), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
營養階層 (Ref. 69278):  4.3   ±0.76 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 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  High vulnerability (60 of 100).
價格種類 (Ref. 80766):   Medium.