Question: asking about how to start fish farming

Answer: first drying of pond bottom till the bottom get crack
apply chemical for control of predator fish, aquatic weed and insectnad then, apply lime for acidity control and followed by application of cowdung.
after application of cowdung the phytoplankton population can be develop and the, after 7 days pond can be filled with water. apply urea and ssp for development of zooplankton as good food for fingerling .
stock the fish and feed can be mixture of rice bran and mustard oil cack @ 1:1 ratio.
when the fish attain larger size feed like floating and sinking feed can be used as per the requirement.
growth promoter , mineral and vitamins are also available for enhancing faster growth.
government scheme : plkease visit district fisheries department for packagr and practices and scheme 

construction of new ponds	rs 2.00 lakh/ha in the plain areas. subsidy @ 20% with a ceiling of rs. 40,000/ha for all farmers except sc’s/st’s for whom it will bers 50, 000/ha (25%) 
rs 3.0 lakh/ha in the hill states/districts and north-eastern region. subsidy @ 20% with a ceiling of rs 60,000/ha for all farmers except sc’s/st’s for whom it will be rs 75, 000/ha (25%).
reclamation/renovation of ponds/tanks	rs 60,000/ha. subsidy @ 20% with a ceiling of rs 12, 000/ha for all farmers except sc’s/st’s for whom it will be rs 15,000/ha (25%).