Abstract
The ichthyofauna of the Rio São Francisco basin is relatively well-documented. However, most of this knowledge is concentrated at the upper stretch of its catchment area. In this study, we compile a list of species encompassing almost the entire length of the Rio Carinhanha, an important tributary from upper-middle section of the Rio São Francisco, including a comprehensive diversity of environments. A total of 99 species from 8 orders and 27 families were recorded. Five species are considered non-native, six classifieds as long distance migrants, and three as vulnerable. The orders with the greatest richness of native species were Characiformes and Siluriformes. Characidae was the most represented family, followed by Loricariidae. The main river channels were the richest environments sampled, followed by floodplain lagoons, veredas, and streams. The Carinhanha basin has important lotic remnants, thus it has several migratory fish populations as well as endangered species. This study demonstrates the importance of cataloguing the still poorly explored tributaries of the upper-middle section of the Rio São Francisco basin.
Highlights
The ichthyofauna of the Rio São Francisco has been studied since the eighteenth century, when Prochilodus marggravii was first described by the naturalist Johann Julius Walbaum (Britski et al, 1988)
We considered veredas to be all streams classified as Strahler third order which flowed into hydromorphic ground and had a poorly defined channel surrounded by buritis (Mauritia flexuosa) palm trees (Silva & Bates, 2002)
A total of 99 species distributed across 8 orders and 27 families were recorded for the Rio Carinhanha basin (Table 1; Fig. 4)
Summary
The ichthyofauna of the Rio São Francisco has been studied since the eighteenth century, when Prochilodus marggravii was first described by the naturalist Johann Julius Walbaum (Britski et al, 1988). After more than a century, the basin has one of the most well-known ichthyofauna in the Neotropical region with 241 recorded native species, 70% of them with confirmed occurrences in the state of Minas Gerais (Alves & Pompeu, 2010; Alves et al, 2011; Barbosa et al, 2017). Edited by: Carlos José Einicker Lamas Received: 23/06/2020 Accepted: 02/09/2020 Published: 01/12/2020 upper-middle sections of the Rio São Francisco (Sato et al, 1987; Pompeu & Godinho, 2003; Luz et al, 2012) are available. The fish assemblages of some of the main tributaries of the upper-middle section of the Rio São Francisco remains poorly known (Alves et al, 2009), as is the case of the Rio Carinhanha basin
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
