Published in the journal Neotropical Ichthyology, authors Alessandro Gasparetto Bifi, Renildo Ribeiro de Oliveira, and Lúcia Rapp Py-Daniel have formally described a new species of plecostomus from the genus Ancistrus. Their description, A new species of Ancistrus Kner, 1854 (Siluriformes: Loricariidae) from rio Madeira basin, Amazonas State, Brazil, has been published as an open-access journal article and is freely available online for all to read.
Abstract: During the Mosaico do Apuí expedition in 2006, a new species of Ancistrus was found in the rio Sucunduri, a large tributary of the rio Madeira basin in south Amazonas State. The new species has a unique color pattern for the genus and is distinguished by the presence of alternate light and dark vertical bars on the trunk. Other Ancistrini genera have species with a similar color pattern, but the new species is clearly distinguished by a lack of plates on the snout and presence of fleshy tentacles on the snout as in all Ancistrus representatives. We also provide comments on the taxonomic status of the A. bolivianus, A. heterorhynchus and A. marcapatae.