分類 / 名稱
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Teleostei >
Cypriniformes (Carps) >
Danionidae (Danios) > Danioninae
Etymology: Devario: Bangla/Bengali:‘debari’, local name for these fishes; also meaning ‘brother in law’ (Ref. 2031).
Eponymy: Ananda ‘Andy’ Pathirana has been a Sri Lankan aquarium-fish breeder, trader and exporter for over forty years. [...] (Ref. 128868), visit book page.
More on authors: Kottelat & Pethiyagoda.
環境: 環境 / 氣候帶 / 深度上下限 / 配送範圍
生態學
; 淡水 底中水層性; 非遷移的. 熱帶; 22°C - 25°C (Ref. 13614); 7°N - 6°N
Asia: Nilwala River basin, Opatha, Sri Lanka.
亞洲: Nilwala 河流域, Opatha ,斯里蘭卡。
大小 / 重量 / 年齡
成熟度: Lm ?  range ? - ? cm
Max length : 6.0 cm SL 雄魚/尚未辨別雌雄; (Ref. 118056)
背的軟條 (總數) : 14 - 15; 臀鰭軟條: 16 - 18. Devario pathirana differs from all its congeners by the combination of the following characters: body consisting of 8-9 dark, irregular bars between pectoral-fin origin and caudal-peduncle origin; absence of P+1 and P-1 stripes; body depth 30-33 %SL; snout length less than eye diameter; 14-15 predorsal scales; dorsal fin with 11½-12½ branched rays; anal fin with 14½ branched rays; a blunt, knob-like process on 1st infraorbital; presence of danionin notch; origin of dorsal fin to hypural distance when carried forward reaching middle of eye; pectoral fin, when adpressed, just reaching origin of pelvic fin (Ref. 118056).
Body shape (shape guide): fusiform / normal; Cross section: compressed.
Occurs in still pools to swift flowing streams with pebble or boulder substrates, seldom over sand. Has not been found in silted rivulets flowing into mainstream. More sedentary than D. malabaricus. Forms groups of 3-5 individuals slowly moving near the surface. Probably feeds on insects. Aquarium fish exporters voluntarily refrained from collecting this species until it was better understood and bred commercially. Collected in moderate numbers.
迅速地出現於靜止的水池到用小圓石或大圓石底部流動溪流, 很少在沙子之上。 沒有被發現於流入主流的被淤泥的小河。 比 D. malabaricus 更定棲. 形成 3-5個個體的魚群慢慢地移動接近水表面。 可能吃昆蟲。 水族館魚輸出者自動地克制不要收集這種了,直到它被了解得更好而且經濟性的飼養。 在一般的數量中收集了。
生命週期和交配行為
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
亞洲: Nilwala 河流域, Opatha ,斯里蘭卡。
Pethiyagoda, R., 1991. Freshwater fishes of Sri Lanka. The Wildlife Heritage Trust of Sri Lanka, Colombo. 362 p. (Ref. 6028)
IUCN 瀕危狀態 (Ref. 130435: Version 2025-2 (Global))
瀕危 (EN) (B1ab(iii)+2ab(iii)); Date assessed: 07 August 2019
人類使用
漁業: 沒有興趣; 養殖: 商業性; 水族館: 商業性
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基於模型的估計
系統發育多樣性指數 (參考文獻
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00977 (0.00422 - 0.02262), b=3.04 (2.84 - 3.24), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (參考文獻
69278): 3.2 ±0.40 se; based on food items.
回復力 (參考文獻
120179): 高度, 族群倍增時間少於 15個月 (Preliminary K or Fecundity.).
釣魚的脆弱性 (Ref.
59153): Low vulnerability (10 of 100).
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