Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Osteoglossiformes (Bony tongues) > Osteoglossidae (Arowanas)
Etymology: Scleropages: Greek, skleros = hard + Greek, page, -es = knot (Ref. 45335).

Environment / Climate / Range Ecology

Freshwater; pelagic. Tropical; ? - 15°C (Ref. 44894), preferred ?; 6°S - 14°S

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Asia and Oceania: northern Australia and central-southern New Guinea (Ref. 58511).

Length at first maturity / Size / Weight / Age

Maturity: L_m 45.0 range ? - ? cm
Max length : 100.0 cm SL male/unsexed; (Ref. 44894); common length : 55.0 cm SL male/unsexed; (Ref. 44894)

Short description Morphology | Morphometrics

Dorsal spines (total): 0; Dorsal soft rays (total): 20-24; Anal spines: 0; Anal soft rays: 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).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

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.

Main reference Upload your references | References | Coordinator | Collaborators

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)

IUCN Red List Status (Ref. 115185)

Not Evaluated

CITES (Ref. 94142)

Not Evaluated

Threat to humans

Harmless

Human uses

Fisheries: of no interest; aquaculture: commercial; gamefish: yes; aquarium: commercial

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Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805): PD₅₀ = 0.5781 [Uniqueness, from 0.5 = low to 2.0 = high].

Trophic Level (Ref. 69278): 2.8 ±0.1 se; Based on diet studies.

Resilience (Ref. 69278): Low, minimum population doubling time 4.5 - 14 years (tm=4-5; Fec=30-130).

Vulnerability (Ref. 59153): High vulnerability (59 of 100) .

Entered by Torres, Armi G.

Modified by Reyes, Rodolfo B.

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