Question: asking about fish culture

Answer: 1. liming: - agriculture lime or slaked lime according to soil and water ph. 
6.5-7.5ph - 100 kg/bigha/yr. 1/3rd before stocking of fish and later in equal dosages.
2. manuring - raw cowdung - after 1 week of lime application - 15000kg to 25000kg/bigha/year - 20% initially and 80% monthly interval
3. stocking of fish - 
spawn - 8lakh spawn/bigha
fry - 40 thousand/bigha
fingerling - 1000-2000/bigha
5. depth - 1.5-2m or 4-6 feet
contact - district fishery department - pm- matsya sampada yojana