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Scleropages formosus  (Müller & Schlegel, 1840)

Asian bonytongue
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Scleropages formosus
Picture by Tursinah, N.

Classification / Names Nomi Comuni | Sinonimi | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterigi (pesci con pinne raggiate) > Osteoglossiformes (Bony tongues) > Osteoglossidae (Arowanas)
Etymology: Scleropages: Greek, skleros = hard + Greek, page, -es = knot (Ref. 45335).

Ambiente / Clima / Range Ecologia

; acqua dolce benthopelagico.   Tropical; 24°C - 30°C (Ref. 2060), preferred ?

Distribuzione Stati | Aree FAO | Ecosystems | Presenze | Point map | Introduzioni | Faunafri

Asia: Southern Myanmar to Malay Peninsula and Indonesia, eastern Thailand to Cardamon Range. International trade banned (CITES I, since 1.7.75).

Length at first maturity / Size / Peso / Age

Maturity: Lm ?  range ? - ? cm
Max length : 90.0 cm TL maschio/sesso non determinato; (Ref. 6398)

Short description Morfologia | Morfometria

With 1 pair of barbels; scales large.

Biologia     Glossario (es. 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.

Life cycle and mating behavior Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve

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).

Main reference Upload your references | Bibliografia | Coordinatore | Collaboratori

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 Red List Status (Ref. 115185)

  Endangered (EN) (A4cd)

CITES (Ref. 94142)

Threat to humans

  Harmless




Human uses

Pesca: commerciale; Acquario: elevato interesse commerciale
FAO(pesca: production; publication : search) | FisheriesWiki | Sea Around Us

Informazioni ulteriori

Nomi Comuni
Sinonimi
Metabolismo
Predatori
Ecotossicologia
Riproduzione
Maturità
Deposizione
Fecundity
Uova
Egg development
Age/Size
Accrescimento
Length-weight
Length-length
Length-frequencies
Morfometria
Morfologia
Larve
Dinamica popolazioni larvali
Reclutamento
Abbondanza
Bibliografia
Acquacoltura
Profilo di acquacoltura
Varietà
Genetica
Frequenze alleliche
Ereditarietà
Malattie
Elaborazione
Mass conversion
Collaboratori
Immagini
Stamps, Coins
Suoni
Ciguatera
Velocità
Modalità di nuoto
Area branchiale
Otoliths
Cervelli
Vista

Strumenti

Special reports

Download XML

Fonti Internet

Alien/Invasive Species database | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | ECOTOX | Faunafri | Fishes of Iran | Fishtrace | GenBank(genome, nucleotide) | GloBI | GOBASE | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | Acquari pubblici | PubMed | Reef Life Survey | Scirus | SeaLifeBase | Tree of Life | Wikipedia(Go, ricerca) | World Records Freshwater Fishing | Zoological Record

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5781   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00363 (0.00140 - 0.00941), b=3.13 (2.91 - 3.35), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic Level (Ref. 69278):  3.9   ±0.63 se; Based on food items.
Resilienza (Ref. 69278):  Basso, tempo minimo di raddoppiamento della popolazione 4.5 - 14 anni (tm = 3-4; Fec = 50 (in concrete tanks)).
Vulnerability (Ref. 59153):  Moderate to high vulnerability (47 of 100) .
Price category (Ref. 80766):   Unknown.