Environment: milieu / climate zone / rango de profundidad / distribution range
Ecología
; agua dulce bentopelágico. Tropical; 1°S - 6°S
Asia and Oceania: Indonesia (Mamberamo river system in Irian Jaya) and Papua New Guinea (Ramu and Sepik river system). Often misidentified as Arius leptaspis, a closely related species from southern New Guinea.
Length at first maturity / Tamaño / Peso / Age
Madurez: Lm ?, range 25 - ? cm
Max length : 55.0 cm SL macho / no sexado; (Ref. 2847); common length : 30.0 cm SL macho / no sexado; (Ref. 9233); common length :30 cm SL (female); peso máximo publicado: 1.7 kg (Ref. 9233); peso máximo publicado: 1.7 kg
Espinas dorsales (total) : 1; Radios blandos dorsales (total) : 7; Espinas anales: 0; Radios blandos anales: 18 - 22.
Body shape (shape guide): elongated.
Prefers main river channels, but also occurs in lakes and on the floodplain. Feeds mainly on large crustaceans (Macrobrachium and Caridina), fishes, aquatic and terrestrial insects, nymphs and detritus. Occurs at temperatures ranging from 26 to 32°C. Mainly diurnal.
Life cycle and mating behavior
Madurez | Reproducción | Puesta | Huevos | Fecundidad | Larva
Mouthbrooders. Ovary or brood mass contains 15 to 75 ripe eggs (Ref. 2847).
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. 130435: Version 2025-1)
Threat to humans
Traumatogenic (Ref. 58010)
Human uses
Pesquerías: pesquerías de subsistencia
Herramientas
Special reports
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Fuentes de Internet
Estimates based on models
Phylogenetic diversity index (Referencia
82804): PD
50 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00490 (0.00250 - 0.00959), b=3.13 (2.96 - 3.30), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Nivel trófico (Referencia
69278): 3.0 ±0.47 se; based on food items.
Resiliencia (Referencia
120179): Medio, población duplicada en un tiempo mínimo de 1.4-4.4 años (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (47 of 100).
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