Ambiente: milieu / zona climatica / distribuzione batimetrica / gamma di distribuzione
Ecologia
; acqua dolce; salmastro benthopelagico; pH range: 7.0 - 8.0; dH range: ? - 20; potamodromo (Ref. 51243); distribuzione batimetrica 1 - 10 m (Ref. 2686), usually 1 - 2 m (Ref. 4515). Tropical; 23°C - 27°C (Ref. 1672); 35°N - 18°S
Asia: Pakistan to Thailand and south China. Several countries report adverse ecological impact after introduction.
Lunghezza alla prima maturità / Dimensione / Peso / Età
Maturità: Lm 18.0, range 23 - ? cm
Max length : 100.0 cm SL maschio/sesso non determinato; (Ref. 2686); common length : 61.0 cm TL maschio/sesso non determinato; (Ref. 44091); peso massimo pubblicato: 3.0 kg (Ref. 40637)
Breve descrizione
Chiavi di identificazione | Morfologia | Morfometria
Spine dorsali (totale) : 0; Raggi dorsali molli (totale) : 38 - 43; Spine anali: 0; Raggi anali molli: 23 - 27. Body sub-cylindrical; head depressed; caudal fin rounded (Ref. 2847). The dorsal surface and sides is dark and mottled with a combination of black and ochre, and white on the belly; a large head reminiscent of a snake's head; deeply-gaping, fully toothed mouth; very large scales (Ref. 44091).
Body shape (shape guide): elongated; Cross section: other (see Diagnosi.
Obligate air-breathing (Ref. 126274); Adults inhabit ponds, streams and rivers, preferring stagnant and muddy water of plains (Ref. 41236). Found mainly in swamps, but also occurs in the lowland rivers. More common in relatively deep (1-2 m), still water. Very common in freshwater plains (Ref. 4515, 57235). Occur in medium to large rivers, brooks, flooded fields and stagnant waters including sluggish flowing canals (Ref. 12975). Recorded as having been or being farmed in rice fields (Ref. 119549). Survive dry season by burrowing in bottom mud of lakes, canals and swamps as long as skin and air-breathing apparatus remain moist (Ref. 2686) and subsists on the stored fat (Ref. 1479). Feed on fish, frogs, snakes, insects, earthworms, tadpoles (Ref. 1479) and crustaceans (Ref. 2847). Undertake lateral migration from the Mekong mainstream, or other permanent water bodies, to flooded areas during the flood season and return to the permanent water bodies at the onset of the dry season (Ref. 37770). During winter and dry season, its flesh around coelomic cavity is heavily infested by a larval trematode Isoparorchis hypselobargi. Other parasites infecting this fish include Pallisentis ophicephali in the intestine and Neocamallanus ophicepahli in the pyloric caecae (Ref. 1479). Processed into pra-hoc, mam-ruot, and mam-ca-loc (varieties of fish paste) in Kampuchea (Ref.4929). Perhaps the main food fish in Thailand, Indochina and Malaysia (Ref. 2686). Firm white flesh almost bone-free, heavy dark skin good for soup and usually sold separately (Ref. 2686). In Hawaiian waters the largest specimen taken reportedly exceeded 150 cm (Ref. 44091). Very economic important on both cultures and captures throughout southern and southeastern Asia (Ref. 57235).
Breeds in ditches, ponds and flooded paddy fields. Young shoal at the surface and are guarded by the male parent (Ref. 54793), hiding below the surface water (Ref. 1479). In captivity, as soon as the male bends its body close to the female during mating, milt is released following the release of the eggs (Ref. 45162).
Pethiyagoda, R., 1991. Freshwater fishes of Sri Lanka. The Wildlife Heritage Trust of Sri Lanka, Colombo. 362 p. (Ref. 6028)
Stato della Lista Rossa IUCN (Ref. 130435: Version 2025-2 (Global))
Minaccia per l'uomo
Potential pest (Ref. 2847)
Usi umani
Pesca: elevato interesse commerciale; Acquacoltura: commerciale; Acquario: Acquari pubblici
Strumenti
Rapporti speciali
Scarica XML
Fonti Internet
Stime basate su modelli
Indice di diversità filogenetica (Fonte Biblio. 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00912 (0.00747 - 0.01113), b=2.98 (2.94 - 3.02), in cm total length, based on LWR estimates for this species (Ref. 93245). |
Livello trofico (Fonte Biblio. 69278) |
3.6 ±0.47 se; based on food items. |
Resilienza (Fonte Biblio. 120179) |
Medio, tempo minimo di raddoppiamento della popolazione 1.4 - 4.4 anni (K=0.21; tm=1.5; Fec = 324). |
Vulnerabilità della pesca (Ref. 59153) |
Moderate vulnerability (40 of 100). 🛈 |
Categoria di prezzo (Ref. 80766) |
Unknown.
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Nutrienti (Ref. 124155) |
Calcium = 62.8 [31.2, 135.6] mg/100g; Iron = 0.668 [0.466, 0.942] mg/100g; Protein = 17.9 [16.9, 18.7] %; Omega3 = 0.114 [0.058, 0.219] g/100g; Selenium = 35.3 [15.9, 80.3] μg/100g; VitaminA = 23.5 [10.2, 52.3] μg/100g; Zinc = 0.926 [0.672, 1.421] mg/100g (wet weight); based on nutrient studies. |