分類 / 名稱
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Synbranchiformes (Spiny eels)
合鰓魚目 (Spiny eels) >
Mastacembelidae (Spiny eels)
棘鰍科 (Spiny eels)
Etymology: Macrognathus: Greek, makros = great + Greek, gnathos = jaw (Ref. 45335).
環境: 環境 / 氣候帶 / 深度上下限 / 配送範圍
生態學
; 淡水 居於水底的.
Asia: Jorai River in India and Rapti River basin in Nepal
大小 / 重量 / 年齡
成熟度: Lm ?  range ? - ? cm
Max length : 18.4 cm SL 雄魚/尚未辨別雌雄; (Ref. 83418)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
背棘 (總數) : 19 - 22; 背的軟條 (總數) : 50 - 57; 臀棘: 3; 臀鰭軟條: 47 - 54; 脊椎骨: 74 - 76. Belongs to the member of the Macrognathus aculeatus group but distinguished from all other species of the this group by the following combination of characters: 15-17 rostral tooth plates; 19-22 dorsal-fin spines; and large (eye size) black blotches along dorsal fin. Differs from its other Indian congeners of the Macrognathus aculeatus group as follows: from Macrognathus aral, Macrognathus pentophthalmos and Macrognathus morehensis by the presence of dorsal fin blotches (vs. white rimmed dorsal fin ocelli), from Macrognathus aral and Macrognathus pentophthalmos by having 15-17 rostral tooth plates (vs. 19-27); and also from Macrognathus pentophthalmos and Macrognathus morehensis by having 19-22 dorsal-fin spines (vs. 11-16) and from Macrognathus morehensis by having 15-17 rostral plates (vs. 8-11) (Ref. 83418).
Body shape (shape guide): eel-like; Cross section: oval.
生命週期和交配行為
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
Britz, R., 2009. Species of the Macrognathus aculeatus group in Myanmar with remarks on M. caudiocellatus (Teleostei: Synbranchiformes: Mastacembelidae). Ichthyol. Explor. Freshwat. 20(4):295-308. (Ref. 83418)
IUCN 瀕危狀態 (Ref. 130435: Version 2025-2 (Global))
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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) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00295 (0.00136 - 0.00638), b=2.95 (2.78 - 3.12), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245). |
營養階層 (參考文獻 69278) |
3.3 ±0.4 se; based on size and trophs of closest relatives |
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 (23 of 100). 🛈 |