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vol.12 issue1Taxonomic revision of SpectracanthicusNijssen & Isbrücker (Loricariidae: Hypostominae: Ancistrini), with description of three new speciesA new species of the armored catfish genus Pareiorhaphis Miranda Ribeiro (Siluriformes: Loricariidae) from the rio Paraguaçu, Bahia State, northeastern Brazil author indexsubject indexarticles search
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Neotropical Ichthyology

Print version ISSN 1679-6225On-line version ISSN 1982-0224

Abstract

PABLO LEHMANN, A.; LAZZAROTTO, Henrique  and  REIS, Roberto E.. Parotocinclus halbothi, a new species of small armored catfish (Loricariidae: Hypoptopomatinae), from the Trombetas and Marowijne River basins, in Brazil and Suriname. Neotrop. ichthyol. [online]. 2014, vol.12, n.1, pp.27-33. ISSN 1679-6225.  http://dx.doi.org/10.1590/S1679-62252014000100002.

Parotocinclus halbothiis 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 Parotocinclusby 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.

Keywords : Amazon; Biodiversity; Freshwater; Miniature fish; Systematics.

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