Actinopterygii (Straalvinnigen) >
Osteoglossiformes (Bony tongues) >
Osteoglossidae (Arowanas)
Etymology: Scleropages: Greek, skleros = hard + Greek, page, -es = knot (Ref. 45335).
Omgeving / Klimaat / Range
Ecologie
; zoetwater pelagisch. Tropical; ? - 15°C (Ref. 44894), preferred ?; 6°S - 14°S
Asia and Oceania: northern Australia and central-southern New Guinea (Ref. 58511).
Length at first maturity / Size / Gewicht / Leeftijd
Maturity: Lm 45.0 range ? - ? cm
Max length : 100.0 cm SL mannelijk/geslacht niet bekend; (Ref. 44894); common length : 55.0 cm SL mannelijk/geslacht niet bekend; (Ref. 44894)
Korte beschrijving
Morfologie | Morfometrie
Dorsale stekels (totaal): 0; Dorsale zachte stralen (totaal): 20-24; Anale stekels 0; Anale zachte stralen: 28 - 32
Adults occur in still waters of streams and swamps where it is usually seen near the surface or close to shore among aquatic vegetation (Ref. 2847, 44894). Solitary, territorial and spawn prior to the wet season when surface water temperatures approach 30°C (Ref. 44894). Young feed primarily on microcrustaceans (Ref. 2847). Primarily a surface feeder, feeding on a variety of terrestrial and aquatic insects, small fishes, frogs, crustaceans, and some plant material (Ref. 44894). Mouthbrooders (Ref. 56180). Maximum weight reported in Ref. 5259 may be 12.27 kg (W. Lau, pers. Comm. 07/05). Important food fish (Ref. 58511) and a valuable aquarium fish (Ref. 83518).
Fertilized eggs are carried in the mouth of the female. Eggs hatch in 1-2 weeks. Larvae, with their enlarged yolk sac, are kept in or close to the mouth for another 4 or 5 weeks. Young fish commence feeding, primarily on microcrustaceans, at a size of 2-3 cm, well before the yolk sac is entirely resorbed. Become independent at a length of 3.5-4.0 cm.
Allen, G.R., 1991. Field guide to the freshwater fishes of New Guinea. Publication, no. 9. 268 p. Christensen Research Institute, Madang, Papua New Guinea. (Ref. 2847)
Status op de Rode Lijst van het IUCN (Ref. 115185)
CITES (Ref. 94142)
Not Evaluated
Gevaarlijk voor mensen
Harmless
Gebruik door de mens
Visserij: van geen belang; Aquacultuur: commercieel; vis voor de hengelsport: ja; Aquarium: Commercieel
Meer informatie
ReferentiesAquacultuurAquacultuurprofielKweeklijnenGeneticaAlleelfrequentiesErfelijkheidZiektenVerwerkingMass conversion
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Estimates of some properties based on models
Phylogenetic diversity index (Ref.
82805): PD
50 = 0.5781 [Uniqueness, from 0.5 = low to 2.0 = high].
Trophic Level (Ref.
69278): 2.8 ±0.1 se; Based on diet studies.
Weerstandsvermogen (Ref.
69278): laag, minimale populatieverdubbelingstijd 4,5-14 jaar (tm=4-5; Fec=30-130).
Kwetsbaarheid (Ref.
59153): High vulnerability (59 of 100) .
