Length-weight relationships of 26 fish species from the middle section of the Negro River (Tacuarembo-Durazno, Uruguay)

This study provides data on the length-weight relationship (LWR) for 26 species of neotropical fishes. Specimens were collected between 2008 and 2009 from a dam-enclosed section of the middle Negro River (Uruguay). This study represents the first reference on length-weight relationships for 17 species, and also provides new maximum sizes for eight species.