An economic evaluation of Pacu – Piaractus mesopotamicus juvenile production in different rearing systems is available for free download.
In this study, the authors, Rosangela Kiyoko Jomori, Dalton José Carneiro, Maria Inez Espagnoli Geraldo Martins and Maria Célia Portella, evaluated the costs and gross income related to the production of juvenile pacu, Piaractus mesopotamicus.
The larviculture technique for the production of juveniles usually employed in Brazil is the semi-intensive system, which consists in stocking the larvae in fertilized ponds from the time when exogenous feeding begins until the juvenile stage (Senhorini et al., 1991). Nevertheless, the survival rates obtained with this system are usually low, making large-scale production more difficult.
When rearing common carp (Cyprinus carpio), tambaqui (Colossoma macropomum), and pacu (Piaractus mesopotamicus) larvae in fertilized ponds, Chabalin et al. (1989) obtained survival rates around 35%, 30%, and 20%, respectively, at the end of juvenile rearing. The authors suggested that the pacu juvenile rearing technique needed to be improved.