On the contribution of supplementary feeding in increasing fish production through composite fish culture in India (polyculture of major carp species)

alimentacion complementaria alimentation des poissons carp carpa carpe cirrhinus ctenopharyngodon idella cyprinoidei cyprinus encuestas fertilisation fertilizer application fish culture fish feeding fish ponds fishery production fishery resources hypophthalmichthys institution de recherche labeo piscicultura pisciculture production data production halieutique recursos pesqueros research institutions ressource halieutique supplementary feeding surveys