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Fatores abióticos podem determinar o sucesso na larvicultura de algumas espécies de peixes. A cor do tanque e salinidade da água de criação podem promover alterações no comportamento e na fisiologia das pós-larvas de peixes. O objetivo deste experimento foi avaliar a influência das salinidades 0,0‰; 0,7‰; 1,4‰; 2,0‰; 2,5‰ e 5,0‰ da água e das cores branca e preta dos tanques na larvicultura de Pimelodus maculatus. A sobrevivência foi afetada pela salinidade (p<0,05), sendo o maior valor obtido na salinidade 2,0% com 45,6±3,9%, ocorrendo mortalidade total na salinidade 5,0‰. Não houve diferença na sobrevivência (p>0,05) entre os tanques branco e preto com valor médio de 31,7±17,7%. Portanto, o valor de 2mg/L de NaCl re velou-se a melhor salinidade para larvicultura de Pimelodus maculatus, e as cores testadas não afetaram a sobrevivência das pós-larvas. Abiotic factors determine the success of the larviculture in some fish species. Tank color and the water salinity can cause alterations in the behavior and physiology of the fish post-larvae. The purpose of this experiment was to evaluate the influence of the difference water salinity concentration (0.0‰; 0.7‰; 1.4‰; 2.0‰; 2.5‰ and 5.0‰) and the use of white or black tanks in the larviculture of Pimelodus maculatus. The survival rate was affected by water salinity (p<0.05), with the highest rate 45.6±3.9%, obtained at a salinity of 2.0‰ and a total mortality at salinity 5.0‰. There was no difference in the survival rate (p>0.05) between post-larvae stocked in black or white tanks with an average value of 31.7±17.7%. Therefore, 2.0‰ proved to be the best salinity for larviculture of the Pimelodus maculatus, and the colors tested did not affect the survival of the post-larvae

Efeito de fatores abióticos na larvicultura de pintado amarelo Pimelodus maculatus (Lacépède, 1803): salinidade e cor de tanque