Digestive enzymes of two freshwater fishes (Limia vittata and Gambusia punctata) with different dietary preferences at three developmental stages.

The variation of activity of some digestive enzymes was studied in three age groups of two freshwater endemic fishes from Cuba: Limia vittata and Gambusia punctata. Trypsin, chymotrypsin and amylase activities showed a different pattern between both species. Trypsin and chymotrypsin activity increased with the age of fishes, while amylase activity decreased.