Classification / Names
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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
Οικολογία
; Γλυκού νερού βενθοπελαγικό. Tropical
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).
Μέγεθος / Βάρος / Age
Maturity: Lm ? range ? - ? cm
Max length : 3.1 cm SL αρσενικό/απροσδιόριστο; (Ref. 43281); μεγ. αναφερόμενη ηλικία: 1.00 έτη (Ref. 59043)
Short description
Μορφολογία | Μορφομετρία
Μαλακές εδρικές ακτίνες: 18 - 20
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).
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).
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)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
Περισσότερες πληροφορίες
Age/SizeΑύξησηLength-weightLength-lengthLength-frequenciesΜορφομετρίαΜορφολογίαΠρονύμφεςΔυναμική προνυμφώνΣτρατολόγησηΑφθονίαBRUVS
ΑναφορέςΥδατοκαλλιέργειεςΠροφίλ υδατοκαλλιέργειαςΣτελέχοιΓενετικήElectrophoresesΚληρονομικότηταΑσθένειεςΜεταποίησηNutrientsMass conversion
ΣυνεργάτεςΦωτογραφίεςStamps, Coins Misc.ΉχοιΣιγκουατέραΤαχύτηταΚολυμβητικός ΤύποςΕπιφάνεια βραγχίωνOtolithsΕγκέφαλοιΌραση
Εργαλεία
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Διαδικτυακές πηγές
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00479 (0.00190 - 0.01207), b=3.13 (2.91 - 3.35), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Τροφικό Επίπεδο (Ref.
69278): 2.7 ±0.31 se; based on food items.
Generation time: 0.4 ( na - na) years. Estimated as median ln(3)/K based on 1
growth studies.
Ελαστικότητα (Ref.
120179): Χαμηλό, ελάχιστος χρόνος για διπλασιασμό πληθυσμού 4,5 - 14 έτη (Assuming fec < 100).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
