Diversity of fish in insular portions of water in a rural area located in Viamão – RS, Brazil Vladimir Stolzenberg Torres, Felipe Silveira Stolzenberg Torres, Lucas de Souza Fabre, Ian Machado Lange

Abstract

This study presents a list of native and exotic fish observed in a rural area in the Faxina region, municipality of Viamão - RS. The observations were carried out from 2004 to autumn 2020. The fish were collected throughout the observation period, totaling 21 species. From the results, it can be seen that the ichthyofauna is represented by six orders and eleven families. The presence of the exotic species Ctenopharyngodon idella (Valenciennes, 1844) and Oreochromis niloticus (Linnaeus, 1758) is recorded. Of note, with potential for aquarium keeping, are Gymnotus aff. carapo Linnaeus, 1758, Eigenmannia trilineata López & Castello, 1966, Jenynsia multidentata (Jenyns, 1842), and Phalloceros caudimaculatus (Hensel, 1868).