分類 / 名前
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Siluriformes (Catfishes) >
Loricariidae (Armored catfishes) > Hypostominae
Etymology: Pseudoqolus: Pseudoqolus is a portmanteau of the Greek word pseudes (false) and the genus name Panaqolus, indicating that although this genus may look superficially like Panaqolus, such an appearance is false; koko: The name koko is a Wayana Amerindian name meaning night, in reference to the dark coloration of the species, and in allusion to the similarly colored and named Panaqolus nocturnus. A noun in apposition (Ref. 90183).
環境:環境 / 気候帯 / 深さの範囲 / 分布範囲
生態学
; 新鮮な水 底生の. Tropical
South America: upper Maroni River basin.
サイズ / 重さ / 年齢
成熟: Lm ?  range ? - ? cm
Max length : 9.0 cm SL オス/雌雄の選別がない; (Ref. 90183)
簡単な記述
検索表 | 形態学 | 形態計測学
背面の脊椎 (合計) : 2; 背鰭 (合計) : 7; 肛門の骨: 1; 臀鰭: 5. This species is distinguished by its large and almost spoon-shaped teeth characteristic of Panaqolus but bifid instead of most generally unicuspid in congeners, and characterized by its specific barcode sequence (JF747003). Differs also from all other congeners except Panaqolus dentex and P. nocturnus by having a uniformly blackish-brown coloration (vs. banded pattern of coloration in P. purusiensis, P. gnomus, P. maccus, and P. changae; or spotted pattern of coloration in P. albomaculatus). It can be separated from Panaqolus dentex by having dark pigment on membrane and branched rays of all fins, as well as a smaller interorbital width (29.4-33.2% HL, mean 31.6, vs. 38.7), a shorter pectoral spine (29.8-31.3% HL, mean 30.3, vs. 34.8) and a greater caudal peduncle depth (12.0-13.4% SL, mean 12.9, vs. 10.8). It is readily distinguished from Panaqolus nocturnus by having larger eye (orbit length 18.8-20.8% HL vs. 13.7-15.9) (Ref. 90183).
Body shape (shape guide): elongated.
Found in main river channel on a stony substrate at two meters depth (Ref. 90183). Collected together with the hypostomins Hemiancistrus medians, Peckoltia otali and Pseudancistrus barbatus, and with the loricariins Harttia guianensis, Loricaria cataphracta and Rineloricaria stewarti (Ref. 90183). The gut contents of one specimen consisted mostly of intact sponge fragments and spicules (Ref. 117193).
ライフサイクルと交尾行動
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Fisch-Muller, S., J.I. Montoya-Burgos, P.-Y. Le Bail and R. Covain, 2012. Diversity of the Ancistrini (Siluriformes: Locariidae) from the Guianas: the Panaque group, a molecular appraisal with description of new species. Cybium 36(1):163-193. (Ref. 90183)
IUCNのレッドリストの状況は (Ref. 130435: Version 2025-2 (Global))
人間の用途
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インターネットの情報源
モデルに基づく推定値
系統多様性指数 (参照 82804) |
PD50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.01549 (0.00729 - 0.03291), b=2.96 (2.79 - 3.13), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
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漁業の脆弱性 (Ref. 59153) |
Low to moderate vulnerability (26 of 100). 🛈 |