Bangladesh is a country of submerged with numerous wetlands. This is the blessing of nature that enriches the country with a rich aquatic biodiversity. About 265 Freshwater fish species are inhabitant in the water bodies of Bangladesh (Rahman, 2005), among
Temperature is a crucial factor in aquaculture. Both low and high temperatures hamper the fish physiology and water quality as well as fish culture. Moreover low or high temperature especially, low causes high growth performance and effectiveness of some pathogens.