| the fish fauna in tropical rivers: the case of the sorocaba river basin, são paulo, brazil. | a survey was carried out on the fish species in the sorocaba river basin, the main tributary of the left margin of the tietê river, located in the state of são paulo, brazil. the species were collected with gill nets. after identification of the specimens, their relative abundance, weight and standard length were determined. up to the present moment there are not any studies that focus this subject in this hydrographic basin. fifty-three species, distributed in eighteen families and six orders w ... | 2003 | 15162785 |