分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Gymnotiformes (Knifefishes)
電鰻目 (Knifefishes) >
Gymnotidae (Naked-back knifefishes)
裸背電鰻科 (Naked-back knifefishes) > Gymnotinae
Etymology: Gymnotus: Greek, gymnos = naked (Ref. 45335); pantanal: The specific epithet pantanal from the Pantanal Matogrossense of Brazil, the hydrological region of the type locality. A noun in apposition..
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 居於水底的. 熱帶
South America: Brazil, Paraguay and Bolivia.
南美洲: 巴西，巴拉圭與玻利維亞。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 26.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 118108)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
Gymnotus pantanal differs from other members of the G. pantherinus species-
group (except G. anguillaris) in possessing a color pattern composed of thin obliquely oriented pale pigment bands (about one third the width of the dark bands) with wavy margins restricted to the ventral portion of the body (rarely extending above the lateral line) on
the anterior half of the body. Gymnotus pantanal further differs from other members of the G. pantherinus species-group in possessing a wider head (72–77 vs. 52–69% head length). Gymnotus pantanal further differs from G. anguillaris in possessing more narrowly set eyes (37–41 vs. 43–56% head length), a deeper head (66–74 vs. 60–65% head length), larger branchial openings (38–43 vs. 29–36% head length), longer pectoral fins (51–56 vs.
42–50% head length), more pectoral-fin rays (mode 17 vs. 16), and fewer pored posterior
lateral-line scales (to first ventral ramus: 47–58 vs. 58–62; total: 102–114 vs. 124–130).
Gymnotus pantanal 與其他 G. pantherinus 種的成員不同-
群 (除了 G. anguillaris 以外) 在用波浪狀的邊緣持有彩色斑紋組成物為細的斜向灰白的有顏色條紋 (大約三分之一深色條紋的寬度) 方面侷限於身體 (很少地延伸上方側線) 的腹部分了
身體前半部。 Gymnotus pantanal 進一步在持有一個較寬的頭部方面與其他 G. pantherinus 種群的成員不同。 (72-77 vs.52-69% 頭長) Gymnotus pantanal 進一步有別於 G. anguillaris 在更狹窄持有方面豎立眼 (37-41 vs.43-56% 頭長) ，一個較深的頭部 (66-74 vs.60-65% 頭長) ，較大的鰓裂 (38-43 vs.29-36% 頭長) ，較長的胸鰭 (51-56 vs.
42-50% 頭長), 更多的胸鰭鰭條 (模態 17 vs.16), 與較少數有孔的在後部了
側線鱗片 (對第一腹面分支: 47-58 vs.58-62; 總數: 102-114 vs.124-130).
Facultative air-breathing in the genus (Ref. 126274); Found in rooted grasses and floating macrophytes in small creeks and along the banks of larger backwater rivers (Ref. 54472). Occurs syntopically with Gymnotus inaequilabiatus and G. sylvius (Ref. 54472).
發現於在小溪中的生根草與漂浮的大型植物而且沿著較大的迴流水河的岸了。 (參考文獻 54472) 生存與 糙唇裸背電鰻〔Gymnotus inaequilabiatus〕 與 G. sylvius 有鄰接關係.(參考文獻 54472)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚
南美洲: 巴西，巴拉圭與玻利維亞。
Fernandes, F.M.C., J.S. Albert, M.F.Z. Daniel-Silva, C.E. Lopes, W.G.R. Crampton and L.F. Almeida-Toledo, 2005. A new Gymnotus (Teleostei: Gymnotiformes: Gymnotidae) from the Pantanal Matogrossense of Brazil and adjacent drainages: continued documention of a cryptic fauna. Zootaxa 933:1-14. (Ref. 54472)
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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=0.00437 (0.00209 - 0.00911), b=2.98 (2.79 - 3.17), 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): 高度, 族群倍增時間少於 15個月 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (16 of 100).
