questions: asked about fish composition and feed for farming  
 answers: 1500-2000 fingerling per bigha for semi intensive
800 fingerling per bigha for traditional 
surface - 30 to 40 %
coloumn _ 15 to 20 %
bottom - 40 to 45 %
silver carp - 300 figerling
catla - 500
rohu - 500
grass carp - 200
mrigal- 300
common carp - 200
feed 3 % per body weight
roce bran : mutard oil cake @ 1:!
supplementary feed - abis, godrej