Oryzias asinua Parenti, Hadiaty, Lumbantobing & Herder, 2013

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Oryzias asinua
Male picture by Wagnitz, A.

Klassifizierung / Names Namen | Synonyme | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (Strahlenflosser) > Beloniformes (Needle fishes) > Adrianichthyidae (Ricefishes) > Oryziinae
Etymology: Oryzias: Greek, oryza = rice; because of the habitat used by this fish (Ref. 45335);  asinua: Name denotes the occurrence of this species in the Sungai Asinua, the type locality.

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

; süßwasser benthopelagisch.   Tropical; 26°C - ? (Ref. 94271)

Verbreitung Länder | FAO Gebiete | Ecosystems | Vorkommen | Point map | Einführungen | Faunafri

Asia: Sungai Asinua in Sulawesi Tenggara, Indonesia.

Size / Gewicht / Alter

Maturity: Lm ?  range ? - ? cm
Max length : 2.7 cm SL Männchen/unbestimmt; (Ref. 94271)

Kurzbeschreibung Morphologie | Morphometrie

Rückenflossenweichstrahlen (insgesamt): 7-9; Afterflossenweichstrahlen: 17 - 19; Wirbelzahl: 29 - 30. A member of Oryzias woworae-species group, which is distinguished by having orange to deep red dorsal and ventral margins of the caudal fin and the ventral margin of the caudal peduncle and at least the posterior portion of the base of the anal fin, and a bluish sheen on the body in both sexes that is most pronounced in live adult males. Oryzias asinua and O. wolasi, differ from O. woworae by having elongate middle dorsal-fin rays in males that reach the posterior extent of the first principal caudal-fin ray and an orange-colored olfactory epithelium that marks each nasal organ in at least females in life. Oryzias asinua can be further diagnosed by having the following characters: an orange-colored olfactory epithelium in both males and females in life and in preserved specimens; relatively slender body compared to O. wolasi and O. woworae with body depth 21-25, mean 22.9 % of SL (vs. 23-32, mean 25.3 in O. wolasi and 22-30, mean 26 in O. woworae); and 4-5 procurrent caudal-fin rays in the lower lobe (vs. 5-7 in O. wolasi and 5-6 in O. woworae) (Ref. 94271).

Biologie     Fachlexikon (Englisch) (z.B. epibenthic)

Found in small pools and along the shore that was an extensive floodplain with clear water, slow to swift current and temperature of 26°C. Lives with a native species of halfbeak, Nomorhamphus sp., a possibly native Clarias sp., and the exotics Puntius binotatus, Trichopodus trichopterus, and Oreochromis sp. (Ref. 94271).

Life cycle and mating behavior Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fecundity | Larven

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Parenti, L.R., R.K. Hadiaty, D. Lumbantobing and F. Herder, 2013. Two new ricefishes of the genus Oryzias (Atheirnomorpha: Beloniformes: Adrianichthyidae) augment the endemic freshwater fish fauna of southeastern Sulawesi, Indonesia. Copeia 2013(3):403-414. (Ref. 94271)

IUCN Rote Liste Status (Ref. 120744)

  stark gefährdet (EN) (B2ab(iii)); Date assessed: 01 October 2018

CITES (Ref. 118484)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

  Harmless





Nutzung durch Menschen

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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):  3.2   ±0.4 se; Based on size and trophs of closest relatives
Widerstandsfähigkeit (Ref. 120179):  .
Verwundbarkeit (Ref. 59153):  Low vulnerability (10 of 100) .