This research was undertaken in Registro, SP, from January 1979 to December 1982, to verify the relationship between the capture (in kilo-grams) of Anchoviella lepidentostole (Fowler, 1911) and fluviometric and climatic parameters. The following results were obtained, utilizing the Pearson index of linear correlation: a) for capture and fluviometric values, r = -0.84; b) for capture and solar radiation, r = 0.63; c) for capture andpluviometric index, r = -0.83; d) for capture and mean air temperature, r = 0.30.