Effect of Organic and Chemical Fertilizers on the Growth Rate of Tambaqui Fish (Colossoma macropomum) (Pisces; Characidae) in Floodplain Fish Ponds in the Eastern Amazon, Pará State, Brazil

Abstract

The effect of organic and chemical fertilizers in fish ponds on the growth rate of tambaqui (Colossoma macropomum) from Pará state, Brazil, was the objective of this work. Three 600 m2 fish ponds located in the floodplain of the Guamá River near the city of Belém, at 01°27’20”S; 48°30’15”W, were used where juvenile fish were subjected to three treatments: organic fertilizer (in fish pond 1); organic and chemical fertilizers (fish pond 2); and a control that was not treated with any kind of fertilizer (fish pond 3).