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) >
Auchenipteridae (Driftwood catfishes)
頸鰭鯰科 (Driftwood catfishes) > Centromochlinae
Etymology: Gelanoglanis: Greek, gelanes, -es, -es = happy, smiling + Greek, glanis = a fish that can eat the bait without touching the hook; a cat fish (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 大洋性; pH range: 4.0 - 5.0. 熱帶
South America: Asisa River basin in Orinoco drainage and Negro River basin.
南美洲: 在奧里諾科河流域與尼格羅河流域的 Asisa 河流域。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 2.2 cm SL 雄魚/尚未辨別雌雄; (Ref. 37098)
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) : 6; 臀鰭軟條: 7 - 8; 脊椎骨: 31. First lepidotrichia of rayed dorsal and pectoral fins present as flexible, unbranched fin rays lacking serrations; structure of adult-male anal fin (seven proximal radials present, two posterior-most smaller than anterior ones); adipose fin absent or, if present, a long, low fin fold; and putative smaller maximum adult body size (1.5-2.2 cm SL).
第一個有鰭條的背鰭與胸鰭的鱗質鰭條呈現成柔韌有彈性又不分枝的鰭條缺乏鋸齒; 雄性成魚臀鰭的結構;(七個近端的動脈存在的, 二個在後部-比前面的一些小的大部分) 脂鰭不存在或, 如果有的話, 一個長的，低鰭褶; 而且想像的比較小的最大成魚身體大小 (1.5-2.2 公分 SL).
Nocturnally active, inhabiting open waters of black-water streams and rivers. Taken near the surface in or near the main channels of rivers with moderate flow. The stomach contents of one specimen taken from the Rio Asisa include adult dipterans, including one whole individual of Sciaridae and large wing fragment of a Ceratopogonidae. Matures at 1.5-2.2 cm SL.
夜行活躍, 居住於黑水溪流與河川的開放水域。 在河的主水道裡或附近帶接近水表面有中等的水流。 取自 Rio Asisa 的一件標本的胃內含物包括成魚雙翅類昆蟲,包括蠓科昆蟲的一個整個 Sciaridae 的個體與大翼碎片。 在 1.5-2.2 公分 SL 時成熟。
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
南美洲: 在奧里諾科河流域與尼格羅河流域的 Asisa 河流域。
Soares-Porto, L.M., S.J. Walsh, L.G. Nico and J.M. Netto, 1999. A new species of Gelanoglanis from the Orinoco and Amazon river basins, with comments on miniaturization within the genus (Siluriformes: Auchenipteridae: Centromochlinae). Ichthyol. Explor. Freshwat. 10(1):63-72. (Ref. 32901)
IUCN 瀕危狀態 (Ref. 130435: Version 2024-2)
無危 (LC) ; Date assessed: 13 August 2020
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5625 [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): 3.1 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
