The rice farm San Carlos S.R.L. and Cancha Larga S.A., owned by the family Meichtry, which cover an area of 3000 hectares.
San Carlos Rice Company is a pioneer in the country combined and rotary exploitation of rice and pacu. At its plant in the town La Leonesa, north of the country, the company uses an area of ??about 210 hectares for this innovative activity.
The rotation between rice and fish resource is an alternative to the traditional alternation between wheat and soya, common in Argentina.
At the farming of 90 hectares in Chaco they are intended to raise pacu (Piaractus mesopotamicus) and perhaps expand in the future.