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Butis butis (Hamilton, 1822)

Duckbill sleeper
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Native range | All suitable habitat | Point map | Year 2050
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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

Crimson-tipped flathead gudgeon, Pointed head gudgeon, Crimson-tipped gudgeon, ... more

Classification / Names आम नाम | उपशब्द | Catalog of Fishes(वर्ग, प्रजाति) | ITIS | CoL | WoRMS | Cloffa

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

Environment: milieu / climate zone / depth range / distribution range पारिस्थितिकी

समुद्री; स्वच्छ जल, अलवण जल; खारा ड़िमरसल; pH range: 7.0 - 8.0; dH range: 9 - 19; ऐम्फिढरोमस (Ref. 51243).   Tropical; 22°C - 28°C (Ref. 2060)

वितरण देश | ऐफ ऐ ओ क्षेत्र | Ecosystems | संयोग | Point map | भूमिका | Faunafri

Indo-West Pacific: East Africa to Fiji (Ref. 6820).

आकार / वज़न / Age

Maturity: Lm ?  range ? - ? cm
Max length : 15.0 cm TL पुल्लिंग / अलिंग; (Ref. 6802); अधिकतम प्रकाशित वज़न: 18.95 g (Ref. 124712)

Short description आकृति विज्ञान | मौरफोमैटरिक्स

पृष्ठीय रीढ़ (सम्पूर्ण): 7; पृष्ठीय सौफट रेज़ (सम्पूर्ण): 8; गुदा कांटा 1; ऐनल सौफट रेज़: 8 - 9. Dark longitudinal lines on body; caudal fin black with light margin dorsally; pectoral base with 1-2 black spots (Ref. 5493).

जीवविज्ञान     शब्द संग्रह (उदाहरणार्थ 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).

Life cycle and mating behavior परिपक्व अवधि | पुनरुत्पत्ति | मछलीऔ का अंडे देना | अंडे | Fecundity | लार्वा

Main reference Upload your references | संदर्भ | संयोजक | सहयोगीयो

Hoese, D.F., 1986. Eleotridae. p. 807-811. In M.M. Smith and P.C. Heemstra (eds.) Smiths' sea fishes. Springer-Verlag, Berlin. (Ref. 5493)

IUCN Red List Status (Ref. 130435)

  Least Concern (LC) ; Date assessed: 29 June 2016

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless




Human uses

मात्स्यिकी: लघु वाणिज्य
FAO(Publication : search) | FishSource |

अधिक जानकारी

देश
ऐफ ऐ ओ क्षेत्र
Ecosystems
संयोग
भूमिका
Stocks
पारिस्थितिकी
आहार
खाद्य पदार्थ
आहार खपत
खोराक
आम नाम
उपशब्द
चपायचय
परभक्षी
ईकोटोकसीकोलौजी
पुनरुत्पत्ति
परिपक्व अवधि
मछलीऔ का अंडे देना
Fecundity
अंडे
Egg development
Age/Size
बाढ़
Length-weight
Length-length
Length-frequencies
मौरफोमैटरिक्स
आकृति विज्ञान
लार्वा
लारवल गतिकी
भर्ती
बहुतायत
संदर्भ
जलीयकृषि
जलीयकृषि रूपरेखा
खींच
आनुवंशिकी
Electrophoreses
हैरेटिबिलटी
बीमारी
प्रक्रमण
Mass conversion
सहयोगीयो
तस्वीरे
Stamps, Coins Misc.
ध्वनि
सिगुयटिरा
रफ्तार
तैरने के प्रकार
गिल क्षेत्र
Otoliths
दिमाग
दृष्टि

साधन

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इंटरनेट स्रोत

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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).
Trophic level (Ref. 69278):  4.0   ±0.66 se; based on food items.
लौटाव (Ref. 120179):  ऊंचा, न्यूनतम जनसंख्या दुगनी समय अवलागत 15 महीने। (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).
Price category (Ref. 80766):   Unknown.