Intensive polyculture of common carp (Cyprinus carpio), mirror carp (Cyprinus carpio carpio), silver carp (Hypophthalmichthys Molitrix) and grass carp (Ctenopharyngodon Idella) at different stocking densities. Bangladesh J. Zool. 2018;46(1):71-80. doi:10.3329/bjz.v46i1.37628