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Scleropages formosus (Müller & Schlegel, 1840)

Asian bonytongue
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Scleropages formosus
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Indonesia country information

Common names: Arwana, Asian bonytongue, Ikan siluk
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: commercial | Ref:
Aquaculture: commercial | Ref: Kottelat, M. and E. Widjanarti, 2005
Regulations: protected | Ref: Kottelat, M. and T. Whitten, 1996
Uses: live export: yes;
Comments: Known from Sumatra and Borneo (Ref. 36654). Recorded from Danau Sentarum National Park (Ref. 56749). Museum: Kapuas, MZB 3010 (Ref. 2091). Protected by Indonesian law (Ref. 12217) and CITES I and II. This has been bred in captivity by several companies in Pontianak and Indonesia has been allowed to export a given number of captive bred individuals per year. As a result of this captive breeding, juveniles are the most exported commodity which coincided with a change of trade practices in the Kapuas Lakes area. In 1995, fishermen reported that adults were released and juveniles were grown, occasionally obtained from the mouthbrooding parent. This indicates that a part of the juveniles exported as captive bred originate from the wild (Ref. 56749). The species exhibit several colors: red, gold, pink and green; and the market price very much depend on the color with red being the most expensive and green the cheapest (Godi [ggodi@writeme.com], pers. comm.). Also Ref. 4835.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/id.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Kottelat, M., A.J. Whitten, S.N. Kartikasari and S. Wirjoatmodjo, 1993
National Database:

Common names from other countries

分類 / Names 俗名 | 同種異名 | Catalog of Fishes(, ) | ITIS | CoL | WoRMS | Cloffa

Teleostei > Osteoglossiformes (Bony tongues) 骨舌魚目 (Bony tongues) > Osteoglossidae (Arowanas) 骨舌魚科 (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 生態學

; 淡水 底中水層性.   熱帶; 24°C - 30°C (Ref. 2060)

分布 國家 | FAO區域 | 生態系 | 發現紀錄 | Point map | 簡介 | Faunafri

Asia: Southern Myanmar to Malay Peninsula and Indonesia, eastern Thailand to Cardamon Range.
亞洲: 印尼,馬來西亞,泰國,柬埔寨與越南。 國際間的買賣禁止。 ( 引用 I, 自從 1.7.75 以後)

Length at first maturity / 大小 / 重量 / 年齡

Maturity: Lm ?  range ? - ? cm
Max length : 90.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 6398)

簡短描述 檢索表 | 型態特徵 | 形態測量圖

With 1 pair of barbels; scales large.
藉由 1對觸鬚; 鱗片大的。

生物學特性     字彙 (例如 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.

出現於沾染死水的溪流單寧酸。 (參考文獻 12693) 幼魚吃在水面的昆蟲, 成魚捕食魚。 (參考文獻 12693) 一個口孵魚, 幼魚出生時的大約 6 公分.(參考文獻 7050) 可作為一個水族館魚了,它的肉具有中等的價格。

Life cycle and mating behavior Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚

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).亞洲: 印尼,馬來西亞,泰國,柬埔寨與越南。 國際間的買賣禁止。 ( 引用 I, 自從 1.7.75 以後)

主要參考資料 Upload your references | 參考文獻 | 合作者 | 合作者

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)

IUCN 瀕危狀態 (Ref. 130435)

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

CITES (Ref. 128078)


CMS (Ref. 116361)

Not Evaluated

對人類具威脅

  無害處的




人類使用

漁業: 商業性; 水族館: 高經濟性
FAO(漁業: 產生; publication : search) | FishSource |

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Trophic ecology
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捕食者
Ecology
生態學
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Length-weight rel.
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繁殖
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Spawnings
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Estimates based on models

Phylogenetic diversity index (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).
營養階層 (Ref. 69278):  3.9   ±0.63 se; based on food items.
回復力 (Ref. 120179):  低的, 最小族群倍增時間4.5 - 14 年 (tm = 3-4; Fec = 50 (in concrete tanks)).
Fishing Vulnerability (Ref. 59153):  High vulnerability (56 of 100).
價格種類 (Ref. 80766):   Unknown.