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

Classification / Names Nombres comunes | Sinónimos | Catalog of Fishes(Género, Especie) | ITIS | CoL | WoRMS | Cloffa

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

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

marino; agua dulce; salobre demersal; pH range: 7.0 - 8.0; dH range: 9 - 19; anfidromo (Ref. 51243). Tropical; 22°C - 28°C (Ref. 2060)

Distribución Países | Áreas FAO | Ecosistemas | Ocurrencias, apariciones | Point map | Introducciones | Faunafri

IIndo-Pacific: from Reunion I., India, and Bangladesh to the Philippines, Indonesia, Thailand, Vietnam, Cambodia, Papua New Guinea, Australia and the Solomon Is.

Tamaño / Peso / Age

Maturity: L_m ? range ? - ? cm
Max length : 15.0 cm TL macho / no sexado; (Ref. 6802); peso máximo publicado: 18.95 g (Ref. 124712)

Short description Claves de identificación | Morfología | Morfometría

Espinas dorsales (total) : 7; Radios blandos dorsales (total) : 8; Espinas anales: 1; Radios blandos anales: 8 - 9. Dark longitudinal lines on body; caudal fin black with light margin dorsally; pectoral base with 1-2 black spots (Ref. 5493).

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 Maturities | Reproducción | Spawnings | Egg(s) | Fecundities | Larva

Main reference Upload your references | Referencias | Coordinador | Colaboradores

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 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

Pesquerías: escaso valor comercial

FAO(Publication : search) | FishSource |

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Check for Aquarium maintenance | Check for Species Fact Sheets | Check for Aquaculture Fact Sheets

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Fuentes de Internet

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).

Nivel trófico (Ref. 69278): 4.0 ±0.66 se; based on food items.

Resiliencia (Ref. 120179): Alto, población duplicada en un tiempo mínimo inferior a 15 meses (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

Price category (Ref. 80766): Unknown.

Butis butis (Hamilton, 1822)