分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Siluriformes (Catfishes)
鯰形目 (Catfishes) >
Sisoridae (Sisorid catfishes)
吸口鯰科 (Sisorid catfishes) > Sisorinae
Etymology: Gagata: Local fish name, kenyakatta, in Bengal; melanopterus: From Greek, masculine adjective..
More on authors: Roberts & Ferraris.
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 底中水層性. 熱帶
Asia: Irrawaddy, Sittang and lower Salween basins in Myanmar.
亞洲: 在緬甸的依洛瓦底江, Sittang 與薩爾溫江流域下游。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 15.8 cm SL 雄魚/尚未辨別雌雄; (Ref. 40780)
背棘 (總數) : 1; 背的軟條 (總數) : 6; 脊椎骨: 39 - 41. Body silvery, either without marking or with faint saddles. Fins, except caudal fin, blackened at least distally. Dorsal spine tip not reaching to adipose-fin origin when adpressed. Premaxilla with 2 rows of teeth. Adpressed anal fin fails to reach first lower procurrent caudal-fin rays. Mouth near snout tip; oral opening transverse, entirely ventral to nares; free lips absent. Anal fin with 4-6 simple rays, 10-12 branched rays. Differs from G. gagata in having its dorsal spine not reaching adipose-fin origin (versus reaching and even extending beyond adipose origin when dorsal-spine is depressed); smaller pelvic fin not reaching anal-fin origin (versus reaching anal-fin origin); last anal-fin ray not reaching first lower procurrent caudal-fin rays (versus extending posteriorly to origin of lower procurrent caudal-fin rays); complete bony encapsulation of the swim bladder (versus incomplete); and 2 rows of teeth on the premaxilla (versus 4 rows) (Ref. 40780).
身體銀色的, 或沒有印記或者有模糊的鞍狀斑。 除了尾鰭之外的鰭末梢部地變黑的至少了。 背棘頂端不延伸到脂鰭起源 , 當緊貼的時候。 前頜骨有 2個列的齒。 緊貼的臀鰭無法達到第一個低的前流尾鰭鰭條。 在吻頂端附近的嘴; 口裂橫跨的, 完全腹對鼻孔; 分離的唇不存在。 臀鰭有 4-6 單一的鰭條， 10-12 分支條。 有別於 G. gagata 有不被達成脂鰭起源的它的背棘;(對達到甚至延伸超過脂肪的起源當背棘被扁平的時候) 較小的腹鰭不達成臀鰭起源;(對達成臀鰭起源) 最後的臀鰭鰭條不達到第一個低的前流尾鰭鰭條;(對向後延伸對低前流的尾鰭鰭條的起源) 完成骨質封包的泳鰾;(對不完全的) 而且 2 列的牙齒在前頜骨 (對 4 列).(參考文獻 40780)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚
亞洲: 在緬甸的依洛瓦底江, Sittang 與薩爾溫江流域下游。
Roberts, T.R. and C.J. Ferraris Jr., 1998. Review of South Asian sisorid catfish genera Gagata and Nangra, with descriptions of a new genus and five new species. Proc. Calif. Acad. Sci. 50(14):315-345. (Ref. 40780)
IUCN 瀕危狀態 (Ref. 130435)
無危 (LC) ; Date assessed: 21 December 2009
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5039 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00676 (0.00307 - 0.01489), b=3.01 (2.83 - 3.19), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.2 ±0.4 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 (10 of 100).
