maximizing freshwater aquaculture production a comprehensive guide to breeding hatchery nursery and growout techniques

freshwater aquaculture production methods breeding hatchery nursery growout polyculture monoculture intensive extensive semiintensive aquaponics hydroponics recirculating systems flowthrough pond net pens enclosure feeding strategies fertilization water quality management aeration oxygenation pumping filtration settlement grading sorting harvesting stocking monitoring predator control disease parasite vaccination nutrition genetics broodstock spawn fry fingerling juvenile maturation spawning egg collection incubation larval rearing tank fish farming sustainable techniques practices health yields market value profitability environmental impact