Abstract
The Ancistrini tribe consists of 217 valid species, which are distributed in 29 genera, so that in Brazil 21 genera are found, in a total of 78 nominal species. Among these, the Ancistrus genus is one of the most diversified tribe and now has 59 nominal species and can be distinguished from other loricariids due to the absence of plaques and odontodes anterior margin of the snout, where t…