Oryzias sinensis Chen, Uwa & Chu, 1989

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Oryzias sinensis
Male picture by Parenti, L.R.

Classificatie / Names Populaire namen | Synoniemen | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (Straalvinnigen) > Beloniformes (Needle fishes) > Adrianichthyidae (Ricefishes) > Oryziinae
Etymology: Oryzias: Greek, oryza = rice; because of the habitat used by this fish (Ref. 45335).

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

; zoetwater benthopelagisch.   Tropical

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Asia: Mekong, Irrawaddy, Salween, Red River and Nanpangjiang basins (Ref. 43281). Introduced in Kazakhstan where it is now abundant; established in lower Kuban drainage; spreading in Azov basin, discovered in River Obitochnaya, Ukraine in 2003 (Ref. 59043).

Size / Gewicht / Leeftijd

Maturity: Lm ?  range ? - ? cm
Max length : 3.1 cm SL mannelijk/geslacht niet bekend; (Ref. 43281); Maximaal vermelde leeftijd: 1 jaren (Ref. 59043)

Korte beschrijving Morfologie | Morfometrie

Anale zachte stralen: 18 - 20

Biologie     Verklarende woordenlijst (b.v. epibenthic)

Adults occur in swamps, marshes, rice fields, backwaters, stream stretches with stagnant water and dense vegetation (Ref. 59043). In Fuxian Lake, China, they are found in upper and middle layers of shallow coastal waters (Ref. 26717). Adults feed mainly on filamentous algae and zooplankton (Ref. 26717). They mature in 3 months time. Spawning occurs between April and September when temperature rises above 26°C. Can tolerate temperatures from 0 to 42°C, surviving winter under ice (Ref. 59043).

Life cycle and mating behavior Geslachtsrijpheid | Voortplanting | Kuitschieten | Eieren | Fecundity | Larven

A cluster of eggs, about 15-50, are spawned every few days in the morning and females carry them for a few hours, until the eggs are entangled into aquatic vegetation by the filaments which cover them. Eggs hatch in 10-12 days at 24°C (Ref. 59043).

Voornaamste referentie Upload your references | Referenties | Coördinator : Seegers, Lothar | Medewerkers

Yang, J.-X., 1991. The fishes of Fuxian Lake, Yunnan, China, with description of two new species. Ichthyol. Explor. Freshwat. 2(3):193-202. (Ref. 26717)

Status op de Rode Lijst van het IUCN (Ref. 120744)

  Niet bedreigd (LC) ; Date assessed: 21 February 2011

CITES (Ref. 118484)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaarlijk voor mensen

  Harmless





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Estimates based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00479 (0.00185 - 0.01240), b=3.13 (2.90 - 3.36), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic Level (Ref. 69278):  2.7   ±0.31 se; Based on food items.
Weerstandsvermogen (Ref. 120179):  laag, minimale populatieverdubbelingstijd 4,5-14 jaar (Assuming fec < 100).
Kwetsbaarheid (Ref. 59153):  Low vulnerability (10 of 100) .