The change of diet live artificial diet food is considered one of the most critical points larviculture fish. Its success depends lar­gely on the feed used and the physiological characteristics of the post-larvae. In this work the transition and habituation able larvae (P. grosskopfii) to a commercial diet with 45% protein for 5 weeks was evaluated. For this 576 larvae capable of 10 days old they were selected with an initial average weight of 20.96 ± 4.35 mg and 9.77 ± 2.64 mm. Housing density was 4 larvae / L. 3 treatments were evaluated (T) with 3 replicates each, as follows: T1: bovine liver; T2: bovine liver + fisf oil and T3: Control. The best results in terms of weight gain (390 ± 18 mg), gain in size (28.9 ± 1.2 mm) and specific growth rate (2.12 ± 0.008) were recorded in the treatment T2, while the best survival was recorded in T1 treatment (31%). It is necessary to conduct studies of ontogenetic development to highlight the nutritional needs of each species to formulate diets.