Nutrient composition of indigenous and exotic fishes of rainfed waterlogged paddy fields in Lakshmipur, Bangladesh.
Present investigation was carried to find out the nutrient composition of fishes collected from six different water logged areas locally known as Dogi. The common carp, Cyprinus carpio contained the highest moisture 83.70% and Puntius ticto the lowest 75.02%. The highest amount of ash (3.56%) was found in Puntius sophore and the lowest (0.26%) in Cyprinus carpio. The highest percentage of protein (19.50%) was found in Anabus testudineus and the lowest (15.14%) in Heteropneustes fossilis. The highest percentage of lipid (4.52%) was found in Lepidocephalus guntea and the lowest (1.40%) was found in Pangasius pangasius. The small indigenous fish species (SIS) contented the highest percentage of nutrient except moisture than the introduced fishes in Dogi. The moisture, protein and lipid were the highest in semi intensive cultured fishes than the waterlogged paddy fishes. The nutrient qualities of fishes for two culture systems (Semi-intensive and Dogi) were significantly varied (P<0.05) except ash content. In conclusion it can be stated that, Dogi fish culture may be used as a tool for sustainability of fish resources of an area, where natural fish can be conserved and the added culture fishes can be used for consumption as well as to support livelihood of the poor and fulfill the nutrient requirement.