分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Beloniformes (Needle fishes)
頜針魚目 (Needle fishes) >
Adrianichthyidae (Ricefishes)
異鱂科 (Ricefishes) > Oryziinae
Etymology: Oryzias: Greek, oryza = rice; because of the habitat used by this fish (Ref. 45335); nebulosus: The specific name, nebulosus, misty or foggy, connotes a species previously unrecognized among the melanistic Oryzias in Lake Poso.
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 底中水層性. 熱帶; 1°S - 3°S, 120°W - 121°W (Ref. 54508)
Asia: Endemic to Lake Poso and its tributary stream, Sulawesi, Indonesia.
亞洲: 在印尼蘇拉威西的湖 Poso 與它的支流水流。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 3.3 cm SL 雄魚/尚未辨別雌雄; (Ref. 54508)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
背的軟條 (總數) : 9 - 11; 臀鰭軟條: 21 - 22; 脊椎骨: 30 - 32. Having a unique sexual dichromatism: adult males dark gray to black in color, while females lighter grayish-yellow to brown. Some adult males possess external conical teeth on the jaws. Lateral process of pelvic bone is in line with the third or fourth pleural rib; precaudal vertebrae 11-13, modally 12; and dorsal fin relatively anterior (origin above 12-14th anal-fin ray); straight, narrow and slender ossified and cartilaginous portions of the gill arches. Dorsal body profile arches gently from head to dorsal-fin origin (Ref. 54508).
有一個獨特的性別雙色變異: 雄性成魚深灰色到黑色的, ，雌性顏色淡的淺灰色- 黃色到褐色。 一些雄性成魚持有外部的錐形牙齒在顎。 腹鰭骨的側面突起是成直線狀以第三或第四根胸膜的肋骨; 尾前椎 11-13, 典型地 12; 而且背鰭相當前面的 (在 12- 第 14個臀鰭鰭條上面的起源); 直的﹐狹窄的與細長的鈣化與鰓弓的軟骨部分。 身體背部輪廓從頭部到背鰭起點逐漸地成弓形彎曲。 (參考文獻 54508)
Collected in the morning in clear water over a bottom of sand, pebbles and fallen branches and during night time from a boat traveling along the lake shore, including the mouth of the tributary stream (Ref. 54508). Infested with parasitic copepods, Lernaea sp. (Ref. 54508).
收集早晨時在一個沙子的底部, 小圓石與落下來的分支上的清澈水域與在來自一艘移動的船的夜晚時間期間沿著湖岸, 包括支流水流的嘴巴.(參考文獻 54508) 以寄生的橈腳類的動物， Lernaea sp. 騷擾。 (參考文獻 54508)
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
亞洲: 在印尼蘇拉威西的湖 Poso 與它的支流水流。
Parenti, L.R. and B. Soeroto, 2004. Adrianichthys roseni and Oryzias nebulosus, two new ricefishes (Atherinomorpha: Beloniformes: Adrianichthyidae) from Lake Poso, Sulawesi, Indonesia. Ichthyol. Res. 51:10-19. (Ref. 54508)
IUCN 瀕危狀態 (Ref. 130435: Version 2024-1)
近危 (NT) (B1b(iii)); Date assessed: 16 November 2018
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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 (0.00189 - 0.01213), b=3.13 (2.91 - 3.35), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.3 ±0.4 se; based on size and trophs of closest relatives
回復力 (Ref.
120179): 低的, 最小族群倍增時間4.5 - 14 年 (Assuming fec < 100).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
