Length–weight relationships of four fish species from the upper Paraná River basin, Southeastern Brazil.

Summary: Here the length–weight relationships (LWR, hereafter) of <italic>Pareiorhina pelicicei</italic>,<italic> Trichomycterus candidus</italic>,<italic> T. pirabitira</italic>, and <italic>T. piratymbara</italic> are provided. Samples of each species were collected between April and July 2017 with a hand net (1.5 mm mesh) in three sites from the upper Paraná River basin, Southeastern Brazil. These results increase knowledge about the LWR of Neotropical freshwater fish. [ABSTRACT FROM AUTHOR]