Abstract
We present a list of ichthyofauna of the Vermelho River, a tributary of the São Lourenço River, Paraguay basin. Fishes were caught with seine nets measuring approximately 10 m in total length and with a mesh size of 0.5 cm. We list 38 species, representing five orders, 11 families, eight sub-families and 28 genera. Characiformes were represented by 23 species, Siluriformes by 11, Perciformes by two, and Gymnotiformes and Pleuronectiformes by a single species each.
Highlights
The Pantanal Mato-grossense is a vast sedimentary floodplain located in the midwest region of Brazil (Britski, et al, 2007)
The Vermelho River starts at Poxoréu city (Mato Grosso State) and it is the main left margin tributary of the São Lourenço River which in turn flows into the northeastern edge of the Pantanal
The Vermelho River is located near the city of Rondonópolis (Mato Grosso State), but it drains other municipalities
Summary
The Pantanal Mato-grossense is a vast sedimentary floodplain located in the midwest region of Brazil (Britski, et al, 2007) In this floodplain, tributaries of the Paraguay River, which drains the system, are environments that fluctuate seasonally and determine the seasonal changes in food and movement of fish that occupy the lower parts of the floodplain. The Vermelho River starts at Poxoréu city (Mato Grosso State) and it is the main left margin tributary of the São Lourenço River which in turn flows into the northeastern edge of the Pantanal. In recent decades this river has suffered from the constant removal of riparian vegetation causing silting and gradual decrease of the flow of its waters.
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