The current work aimed to evaluate the ideal diet level for yellow tail lambari (Astyanax bimaculatus) fingerlings on body weight percentage. Two hundred and forty fingerlings averaging initial weight of 0.52 ± 0.05 g were allotted to 24 hapas according to a completely randomized blocks with six treatments and four replicates. A 1000 L-tank with 6 hapas was considered the block. A hapa with 10 fingerlings was considered the experimental unit. The treatments consisted of increasing feeding levels: 1, 4, 7 10, 13, and 16% of body weight (30% of digestible protein and 3,000 kcal/kg of digestible energy). The observed water parameters were as follows: 24.5ºC, 25.1ºC, 8.4 mg/L, 7.9 e 160.9 mS/cm, respectively, for morning and afternoon temperature, dissolved oxygen, pH, and electric conductivity. The results showed that the best level of feeding for yellow tail lambari fingerlings on average water temperature of 25ºC was of 11.5% of body weight.
aquaculture; Astyanax bimaculatus; lambari; performance
