分類 / Names
共通名の | 類義語 | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
(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
; 新鮮な水 底生の漂泳性. Tropical; 26°C - ? (Ref. 94271)
Asia: Sungai Asinua in Sulawesi Tenggara, Indonesia.
サイズ / 重さ / 年齢
Maturity: Lm ?  range ? - ? cm
Max length : 2.7 cm SL オス/雌雄の選別がない; (Ref. 94271)
形態学 | 形態計測学
背鰭 (合計): 7-9; 臀鰭: 17 - 19; 脊つい: 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).
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
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
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のレッドリストの状況は (Ref. 120744)
絶滅危惧 (EN) (B2ab(iii)); Date assessed: 01 October 2018
CITES (Ref. 118484)
協力者画像Stamps, Coins Misc.音シガテラ（食中毒の名前）速度泳ぐ 型式カマOtoliths脳視覚
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 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
栄養段階 (Ref. 69278
): 3.2 ±0.4 se; Based on size and trophs of closest relatives
弱み (Ref. 59153
): Low vulnerability (10 of 100) .