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Butis butis (Hamilton, 1822)

Duckbill sleeper
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Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Butis butis   AquaMaps   Data sources: GBIF OBIS
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Image of Butis butis (Duckbill sleeper)
Butis butis
Picture by Keith, P.

Sri Lanka country information

Common names: Upside down sleeper, Vaneya
Occurrence: native
Salinity: freshwater
Abundance: fairly common (chances are about 50%) | Ref:
Importance: minor commercial | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Widespread in brackish waters and estuaries, particularly in the south western coastal region, and is known to ascend rivers on occasion. Previously common in the Dehiwela and Wellawatte canals before pollution displaced them.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/ce.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Pethiyagoda, R., 1991
National Database:

Common names from other countries

Upside down sleeper, Crimson-tipped flathead gudgeon, Pointed head gudgeon, ... more

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

Teleostei > Gobiiformes (Gobies) > Butidae (Gudgeon gobies)
Etymology:   More on author: Hamilton.

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

海洋; 淡水; 半鹹淡水 居於水底的; pH range: 7.0 - 8.0; dH range: 9 - 19; 非產卵性溯降河的 (Ref. 51243).   熱帶; 22°C - 28°C (Ref. 2060)

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

IIndo-Pacific: from Reunion I., India, and Bangladesh to the Philippines, Indonesia, Thailand, Vietnam, Cambodia, Papua New Guinea, Australia and the Solomon Is.
印度-西太平洋: 東非到斐濟。 (參考文獻 6820)

大小 / 重量 / 年齡

Maturity: Lm ?  range ? - ? cm
Max length : 15.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 6802); 最大體重: 18.95 g (Ref. 124712)

簡短描述 檢索表 | 型態特徵 | 形態測量圖

背棘 (總數) : 7; 背的軟條 (總數) : 8; 臀棘: 1; 臀鰭軟條: 8 - 9. Dark longitudinal lines on body; caudal fin black with light margin dorsally; pectoral base with 1-2 black spots (Ref. 5493).
在身體上的深色的縱向線; 尾鰭背面黑色的有淡的邊緣; 胸鰭基底有 1-2 個黑色的斑點。 (參考文獻 5493)

生物學特性     字彙 (例如 epibenthic)

Inhabits brackish mangrove estuaries and lower reaches of freshwater streams, usually on mud bottoms (Ref. 44894). Usually found in lagoons and estuaries, particularly where there is vegetation (Ref. 6028, 79840). Occurs frequently in mangrove swamps (Ref. 2847, 79840). Occasionally ascends rivers (Ref. 6028). Feeds mainly on small fishes and crustaceans (Ref. 6028, 79840). Marketed fresh (Ref. 12693).

通常發現於潟湖與河口, 特別地在哪裡有植物.(參考文獻 6028) 時常在紅樹林沼澤中生存。 (參考文獻 2847) 偶然地溯河。 (參考文獻 6028) 主要吃小魚與甲殼動物。 (參考文獻 6028) 在市場上銷售生鮮地了。 (參考文獻 12693)

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

印度-西太平洋: 東非到斐濟。 (參考文獻 6820)

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

Keith, P. and M.I. Mennesson, 2023. Review of Butis (Teleostei: Butidae) from Indo-Pacific islands with description of three new species. Cybium 47(4):431-466. (Ref. 130228)

IUCN 瀕危狀態 (Ref. 130435)

  無危 (LC) ; Date assessed: 29 June 2016

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
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Estimates based on models

Preferred temperature (Ref. 115969): 24.7 - 29.1, mean 28.2 (based on 1196 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5156   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00575 (0.00231 - 0.01432), b=3.07 (2.85 - 3.29), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
營養階層 (Ref. 69278):  4.0   ±0.66 se; based on food items.
回復力 (Ref. 120179):  高度, 族群倍增時間少於 15個月 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).
價格種類 (Ref. 80766):   Unknown.