Compsaraia samueli, Pelican Knifefish

Compsaraia samueli Albert & Crampton, 2009

Pelican Knifefish
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Compsaraia samueli
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分類 / 名稱 俗名 | 同種異名 | Catalog of Fishes(, ) | ITIS | CoL | WoRMS | Cloffa

Teleostei > Gymnotiformes (Knifefishes) 電鰻目 (Knifefishes) > Apteronotidae (Ghost knifefishes) 無背魚科 (Ghost knifefishes) > Apteronotinae
Etymology: Compsaraia: Greek, kompsos, -e, -on = elegance, polish, gracefulness + see under Rajasamueli: Patronym in honour of Dr Samuel Albert, who provided the authors with specimens of the type series.
Eponymy: Dr Samuel Albert is the senior author’s father. [...] (Ref. 128868), visit book page.

環境: 環境 / 氣候帶 / 深度上下限 / 配送範圍 生態學

; 淡水 大洋性. ; 3°S - 4°S, 61°W - 62°W

分布 領土 | FAO區域 | 生態系 | 發現紀錄 | 分布圖 | 簡介 | Faunafri

South America: Brazil. Known from the western Amazon River basin of Peru and Brazil. Collection localities are in the Rio Amazonas, near Iquitos, Peru, the Rio Solimões below the confluence of the Rio Purus, Brazil, and the lower Rio Iça of Brazil.

大小 / 重量 / 年齡

成熟度: Lm ?  range ? - ? cm
Max length : 22.6 cm SL 雄魚/尚未辨別雌雄; (Ref. 80384)

簡短描述 檢索表 | 型態特徵 | 形態測量圖

Compsaraia samueli differs unambiguously from C. compsa by the presence of the following character states:more caudal-fin rays (17–18 [mode 18] vs. 13–16 [mode 14]); a shorter caudal peduncle (CP/LEA = 9% [0–23%] vs. 34% [18–46%]); a less tapering body shape in lateral profile, in which the ratio of body depth measurements at the anal fin and dorsal organ origins is greater (93% [80–116%] vs. 75% [67–82%]); and a smaller body size (minimum size at sexual maturity 144 mm [vs. 165 mm], maximum total length of 230 mm [vs. 305 mm]). Compsaraia samueli may be further distinguished from C. compsa by secondary sexual dimorphisms in several features of snout and jaw morphology (Ref. 80384).
Body shape (shape guide): elongated; Cross section: compressed.

生物學特性     字彙 (例如 epibenthic)

Electric organ discharge known from two sexually mature females and three sexually mature males. The two female specimens exhibited a lower Fo (1.242–1.243 kHz) than the three male specimens (1.337, 1.387 and 1.396 kHz) (Ref. 80384).

生命週期和交配行為 成熟度 | 繁殖 | 產卵場 | | 孕卵數 | 仔魚


主要參考資料 上傳您的推薦信 | 參考文獻 | 合作者 : Albert, James S. | 合作者

Albert, J.S. and W.G.R. Crampton, 2009. A new species of electric knifefish, genus Compsaraia (Gymnotiformes: Apteronotidae) from the Amazon River, with extreme sexual dimorphism in snout and jaw length. Systematics and Biodiversity 7(1):81-92. (Ref. 80384)

IUCN 瀕危狀態 (Ref. 130435: Version 2025-2 (Global))

  無危 (LC) ; Date assessed: 21 July 2020

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

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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 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight a=0.00347 (0.00141 - 0.00851), b=3.06 (2.85 - 3.27), 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)
3.3   ±0.3 se; based on size and trophs of closest relatives
釣魚的脆弱性
(Ref. 59153)
Low vulnerability (18 of 100). 🛈