Record of the occurrence of dinoflagellate Ceratium furcoides in a fish farming lake located in the countryside of São Carlos (SP, Brazil).

(With 2 figures)Blooms of dinoflagellates, mainly the genus Ceratium sp., have been observed in some freshwater ecosystems, as described in the works of Nakano et al. (1999), Ginkel et al. (2001), Santos-Wisnieswki et al. (2007), Matsumura-Tundisi et al. (2010), Moreira et al. (2015) and Almanza et al. (2016).It is important to note that, according to Lund (1965), the genus Ceratium sp. can be found in nutrient rich waters, especially phosphate and nitrate, and usually in association with cyanobacteria.Fieldwork, object of this study, was carried out on March 4