questions: asking about fish stocking rate, fish composition and control of ulcer 
 answers: stocking rate @ 4000 fingerling for 2 bigha pond
surfase(catla, silver carp) @ 30 to 40 %
coloumn or middle (rohu, grass carp, puti, reba, calbasu)@15 to 20 %
bottom (common carp, mrigal) @ 40 to 45 %
 260 ml of cifax mix with 20 l water  for 2 bigha pond - control of ulcer or eus