Environment: milieu / climate zone / depth range / distribution range
Ecologia
; Água doce 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.
Comprimento de primeira maturação / Tamanho / Peso / Idade
Maturity: Lm ?, range 25 - ? cm
Max length : 55.0 cm SL macho/indeterminado; (Ref. 2847); common length : 30.0 cm SL macho/indeterminado; (Ref. 9233); common length :30 cm SL (female); peso máx. publicado: 1.7 kg (Ref. 9233); peso máx. publicado: 1.7 kg
Espinhos dorsais (total) : 1; Raios dorsais (total) : 7; Espinhos anais: 0; Raios anais : 18 - 22.
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.
Ciclo de vida ou comportamento de acasalamento
Maturidade | Reprodução | Desova | Ovos | Fecundidade | Larvas
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)
Status na Lista Vermelha da UICN (Ref. 130435: Version 2024-1)
Ameaça para os humanos
Traumatogenic (Ref. 58010)
Uso pelos humanos
Pescarias: pesca de subsistência
Ferramentas
Relatórios especiais
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Fontes da internet
Estimates based on models
Índice de diversidade filogenética (Ref.
82804): PD
50 = 0.5010 [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).
Nível Trófico (Ref.
69278): 3.0 ±0.47 se; based on food items.
Resiliência (Ref.
120179): médio(a), tempo mínimo de duplicação da população 1,4 - 4,4 anos (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (47 of 100).