期刊
NEOTROPICAL ICHTHYOLOGY
卷 12, 期 1, 页码 27-33出版社
SOC BRASILEIRA ICTIOLOGIA
DOI: 10.1590/S1679-62252014000100002
关键词
Amazon; Biodiversity; Freshwater; Miniature fish; Systematics
类别
资金
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico - CNPq [483060/2013-5, 305180/2010-0, 207038/2013-9]
- Fundacao de Amparo a Pesquisa do Estado do Rio Grande do Sul - FAPERGS [11/1220-7, 11/0936-5]
Parotocinclus halbothi is described as a new species from the Trombetas and Marowijne river basins, in Brazil and Suriname. The new species is distinguished from its congeners in the Guianas, Orinoco, and Amazon basins by details of color pattern, form and arrangement of bony plates, body shape, and morphometric features. It is distinguished from all other species of Parotocinclus by the elongation of the canal cheek plate on the ventral surface of head posteriorly to contact the cleithrum. The new species is differentiated from Parotocinclus collinsae, the most similar species in terms of color pattern, by the small, circular, median abdominal plates, the poorly developed preanal shield with two or three plates, and by having the adipose fin rudimentary. This new species is one of the smallest loricariid catfishes known to date.
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