Fishermen also use the conchilla for their own poultry farms. About 50 conchilla fishermen are grouped in the ‘Uniones de Pescadores’, and the ‘Unión de Pescadores San Pedro de Capacho’, in Huandacareo, Michoacán for legal conchilla fishery activities. However, a problem exists due to the irregular inundation pattern of Lake Cuitzeo, which prevents a regular supply to the market (Fig. 2).