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Scleropages formosus (Müller & Schlegel, 1840)

Asian bonytongue
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Image of Scleropages formosus (Asian bonytongue)
Scleropages formosus
Picture by Tursinah, N.

Classificação / Names Nomes comuns | Sinônimos | Catalog of Fishes(Gênero, Espécies) | ITIS | CoL | WoRMS | Cloffa

> Osteoglossiformes (Bony tongues) > Osteoglossidae (Arowanas)
Etymology: Scleropages: Greek, skleros = hard + Greek, page, -es = knot (Ref. 45335).
More on authors: Müller & Schlegel.

Environment: milieu / climate zone / depth range / distribution range Ecologia

; Água doce bentopelágico. Tropical; 24°C - 30°C (Ref. 2060)

Distribuição Países | Áreas da FAO | Ecossistemas | Ocorrências | Point map | Introduções | Faunafri

Asia: Southern Myanmar to Malay Peninsula and Indonesia, eastern Thailand to Cardamon Range.

Comprimento de primeira maturação / Tamanho / Peso / Idade

Maturity: Lm ?  range ? - ? cm
Max length : 90.0 cm TL macho/indeterminado; (Ref. 6398)

Descrição suscinta Chaves de identificação | Morfologia | Morfometria

With 1 pair of barbels; scales large.

Biologia     Glossário (p.ex. epibenthic)

Occurs in tannin stained blackwater streams (Ref. 12693). Found in forest covered streams including peat adjacent areas. Take around three months for free swimming fries (Ref. 57235). Young individuals feed on insects at the water surface, adults take fishes (Ref. 12693, 57235) and smaller vertebrates (Ref. 56749). A mouth brooder, young about 6 cm at birth (Ref. 7050, 57235). Valued as an aquarium fish, its flesh commands a moderate price.

Ciclo de vida ou comportamento de acasalamento Maturities | Reprodução | Spawnings | Egg(s) | Fecundities | Larvas

From an observation of a breeding pair in a concrete tank, courtship lasts from several weeks to months. During this stage, the breeding pair swims near the water surface usually at night. "The male chases the female around the perimeter of the tank. Sometimes, the pair circle each other nose-to-tail. About one to two weeks before spawning takes place, the fish swim side by side with their bodies touching. Eventually, the female releases a cluster of orange-red eggs. The male fertilises the eggs and then scoops them into its mouth where it incubates them. After hatching which occurs in about a week, the young larvae continue to live in the male's mouth for 7-8 weeks more until the yolk sac is totally absorbed" (Ref. 57886).

Referência principal Upload your references | Referências | Coordenador | Colaboradores

Kottelat, M., 2013. The fishes of the inland waters of Southeast Asia: a catalogue and core bibliography of the fishes known to occur in freshwaters, mangroves and estuaries. The Raffles Bulletin of Zoology 2013 (Suppl. 27):1-663. (Ref. 94476)

Status na Lista Vermelha da UICN (Ref. 130435)

  Em perigo (EN) (A2cd+4cd); Date assessed: 03 June 2019

CITES


CMS (Ref. 116361)

Not Evaluated

Ameaça para os humanos

  Harmless





Uso pelos humanos

Pescarias: espécies comerciais; Aquário: Altamente comercial
FAO - pescarias: desembarques; Publication: search | FishSource |

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Trophic ecology
Itens alimentares
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Ecology
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Max. ages / sizes
Length-weight rel.
Length-length rel.
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Egg(s)
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Dinâmica larval
Anatomy
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Swimming speeds
Visual pigment(s)
Sons de peixes
Diseases / Parasites
Toxicities (LC50s)
Genetics
Genética
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Estimates based on models

Índice de diversidade filogenética (Ref. 82804):  PD50 = 0.5781   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00417 (0.00172 - 0.01010), b=3.10 (2.89 - 3.31), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Nível Trófico (Ref. 69278):  3.9   ±0.63 se; based on food items.
Resiliência (Ref. 120179):  Baixo, tempo mínimo de duplicação da população 4,5 - 14 anos (tm = 3-4; Fec = 50 (in concrete tanks)).
Fishing Vulnerability (Ref. 59153):  High vulnerability (56 of 100).
Categoria de preço (Ref. 80766):   Unknown.