Economic viability of tambaqui production in the municipality of Ariquemes-RO.

The rise increase in family income and the conditions conducive to aquaculture activity have allowed Brazil to increase fish production in recent years. As a result, tambaqui (Colossoma macropomum) farming has become an interesting alternative because it is adaptable to different production systems and widely accepted by consumers. Ariquemes, in the State of Rondônia stands out because it presents adequate logistic and edaphoclimatic conditions for the production of this species. The objective of this paper is to analyze the economic viability of tambaqui farming in excavated nursery in the municipality of Ariquemes ? RO. Revenues and expenses were financially analyzed in a 420-day production cycle, using values of 2015 as a reference. Fish farming was sufficient to pay Total Operational Cost. The Net Margin was R$ 0.44 kg-1 of fish. However, Total Revenue was insufficient to cover the Total Cost, generating negative Net Income of R$ 839.57. Labor hiring and feed purchase were the items that impacted the most and accounted for 16.1% and 73.7% of the Operational Cost, respectively. It has been found that tambaqui farming in an excavated nursery has not shown to be promising and economically viable and tends to become economically unsustainable in the long term