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Anabantiformes (Gouramies, snakeheads) >
Osphronemidae (Gouramies) > Osphroneminae
Etymology: Osphronemus: Greek, osphra = smell + Greek, nema = filament; because of the olfactory organs (Ref. 45335).
More on author: Roberts.
Ambiente: milieu / zona climatica / distribuzione batimetrica / gamma di distribuzione
Ecologia
; acqua dolce pelagico; potamodromo (Ref. 138296). Tropical
Asia: known only from the Mekong basin.
Dimensione / Peso / Età
Maturità: Lm ?  range ? - ? cm
Max length : 60.0 cm SL maschio/sesso non determinato; (Ref. 30857)
Breve descrizione
Chiavi di identificazione | Morfologia | Morfometria
Spine dorsali (totale) : 14 - 16; Raggi dorsali molli (totale) : 10 - 11; Spine anali: 11 - 13; Raggi anali molli: 17 - 19. Differs from the other three known species of Osphronemus in having oral teeth increasingly enlarged and externalized in large adults, a condition apparently unique within anabantoid fishes. In large specimens examined, over 40 cm SL, all of the jaw teeth are enlarged, especially those in the outermost rows, which lie on the external surface of the jaws entirely outside the mouth when it is shut. Coloration of juveniles and adults also is diagnostic. Small juveniles have 6 or 7 vertical bars and a supra-anal dark oval spot, none of which are retained by adults and subadults. Juveniles over about 10 cm have a reddish orangish stripe on the lower part of the head and breast, a feature not observed in any other species. All adults have extensive dark (almost black) areas ventrally and pale areas dorsally. Several large specimens (especially from Stung Treng market, Cambodia) with large and irregular red blotches that superficially at least look very muck like bodied bruises.
Body shape (shape guide): short and / or deep.
Obligate air-breathing (Ref. 126274); Occurs in pools of large rivers and in flooded forests during the rainy season. Feeds mainly on plant matter including fruits, leaves, and flowers, with some insects and crustaceans. Known to reproduce in non-flowing waters near the river shore during lowest water levels (Ref. 12693). Undertakes lateral migrations from the Mekong mainstream into floodplain areas during the flood season and returns to the Mekong River or other permanent water bodies during the dry season (Ref. 37770). These movements are triggered when water levels change (Ref. 37770). Marketed fresh (Ref. 12693).
Ciclo vitale e comportamento di accoppiamento
Maturità | Riproduzione | Deposizione | Uova | Fecondità | Larve
Builds a small nest, made of leaves and roots of a plant named "gohk kai" in Takam, just below the Lee Pee Waterfalls in southern Laos. Eggs and young are guarded by one parent as observed in the Mekong basin at Stung Treng.
Rainboth, W.J., 1996. Fishes of the Cambodian Mekong. FAO species identification field guide for fishery purposes. FAO, Rome, 265 p. (Ref. 12693)
Stato della Lista Rossa IUCN (Ref. 130435: Version 2025-2 (Global))
Minaccia per l'uomo
Harmless
Usi umani
Pesca: commerciale
Strumenti
Rapporti speciali
Scarica XML
Fonti Internet
Stime basate su modelli
Indice di diversità filogenetica (Fonte Biblio. 82804) |
PD50 = 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.01698 (0.00679 - 0.04245), b=3.01 (2.79 - 3.23), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Livello trofico (Fonte Biblio. 69278) |
2.7 ±0.29 se; based on food items. |
Resilienza (Fonte Biblio. 120179) |
Medio, tempo minimo di raddoppiamento della popolazione 1.4 - 4.4 anni (Fec = 1,240). |
Vulnerabilità della pesca (Ref. 59153) |
Moderate to high vulnerability (51 of 100). 🛈 |
Categoria di prezzo (Ref. 80766) |
Unknown.
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