The effect of stocking different ratios of common carp, Cyprinus carpio L., and tilapias in polyculture ponds on production characteristics and profitability

carga ganadera carp carpa carpe cyprinus fish culture fish farming growth rate hybride hybrids israel oreochromis piscicultura pisciculture profitability rendement rendimiento rentabilidad stocking density taux de charge taux de croissance tilapia (genre) tilapia (genus) yields