分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Cypriniformes (Carps)
鯉形目 (Carps) >
Cyprinidae (Minnows or carps)
鯉科 (Minnows or carps) > Acrossocheilinae
Etymology: Onychostoma: Greek, onyx, -ychos = nail + Greek, stoma = mouth (Ref. 45335).
More on author: Kottelat.
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 底中水層性. 熱帶
Asia: Mekong basin in Laos and China.
亞洲: 寮國與雲南的湄公河流域。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 23.0 cm SL 雄魚/尚未辨別雌雄; (Ref. 27732)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
背棘 (總數) : 0; 背的軟條 (總數) : 12; 臀棘: 0; 臀鰭軟條: 8. Narrow mouth (mouth width 2.0-2.2 times in head width); barbels lacking in adults (usually two pairs of minute barbels present in juveniles less than about 5 cm SL); last simple dorsal ray serrated posteriorly; caudal peduncle 3.0-3.6 times longer than deep (Ref. 27732).
狹窄的嘴;(嘴寬度 2.0-2.2 倍頭長比率寬度) 觸鬚沒有成魚;(通常兩對的細小觸鬚出現在稚魚少於大約 5 公分 SL) 最後的單一背鰭鰭條在後部地鋸齒狀的; 尾柄深地的 3.0-3.6 倍.(參考文獻 27732)
Inhabits clear water, swift flowing streams (Ref. 43281).
棲息於水流清澈且快速流動的溪流。 (參考文獻 43281)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚
亞洲: 寮國與雲南的湄公河流域。
Kottelat, M., 2001. Fishes of Laos. WHT Publications Ltd., Colombo 5, Sri Lanka. 198 p. (Ref. 43281)
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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=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
營養階層 (Ref.
69278): 2.7 ±0.3 se; based on size and trophs of closest relatives
回復力 (Ref.
120179): 中等的, 族群倍增時間最少 1.4 - 4.4年 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (18 of 100).
