The aim of the study was to evaluate influence changes in seawater salinity on juvenile Brazilian sardine (Sardinella brasiliensis). Through two assays, LC50 (96 h) and zootechnical performance (42 days) were determined, respectively. In first assay, six treatments 0, 7, 14, 21, 28 35 parts per thousand (ppt) with three replicates established. For this, 100-L cylinder-conical tanks used, 30 ind...