Ammoglanis natgeorum, a new miniature pencil catfish (Siluriformes:Trichomycteridae) from the lowerAtabapoRiver,Amazonas,Venezuela

被引：4
作者：
Henschel, Elisabeth [1 ,2 ]
Lujan, Nathan K. [1 ]
Baskin, Jonathan N. [1 ,3 ]
机构：
[1] Amer Museum Nat Hist, Dept Ichthyol, 79th St & Cent Pk West, New York, NY 10024 USA
[2] Univ Fed Rio de Janeiro, Lab Systemat & Evolut Teleost Fishes, Inst Biol, Rio De Janeiro, Brazil
[3] Nat Hist Museum Los Angeles Cty, Dept Ichthyol, Los Angeles, CA USA
来源：
JOURNAL OF FISH BIOLOGY | 2020年 / 97卷 / 05期
关键词：
blackwater; Orinoco basin; psammophily; riverine infauna; Sarcoglanidinae; taxonomy; AMAZON BASIN; SILURIFORMES; TRICHOMYCTERIDAE; GENUS; PECKOLTIA; BRAZIL; SARCOGLANIDINAE; PHYLOGENY; ORINOCO; GENERA;
D O I：
10.1111/jfb.14515
中图分类号：
S9 [水产、渔业];
学科分类号：
0908 ;
摘要：
A new species of the sand-dwelling catfish genusAmmoglanisis described from a marginal habitat of the lower Atabapo River, a left-bank blackwater tributary of the upper Orinoco River in Amazonas, Venezuela, adjacent to the border with Colombia.Ammoglanis natgeorumis distinguished from all congeners by trunk pigmentation pattern consisting of scattered ventral chromatophores concentrated around the anal-fin base and numerous additional meristic and anatomical characteristics.A. natgeorumis the second species ofAmmoglanisdescribed from the Orinoco River basin afterAmmoglanis pulex, and several shared character states (e.g., eight total dorsal-fin rays, overall coloration pattern and presence of two finger-like papillae posterior to chin) suggest that it is more closely related toAmmoglanis obliquus(from the central Amazon basin) andA. pulexthan to other congeners.
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收藏
页码：1481 / 1490
页数：10
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