Question: asking about of mass mortality of fingerling fish 

Answer: please check your water quality test at kvk phone no: 9954384344 dr. u j sharmah
after examining the the water quality parameter, we will be able to tell you the treatment 
recommended dose for fingerling stocking is 1200 for 1.5 bigha fish pond 
and lime dose for monthly application is 10 kg per bigha fish pond and lime must be mixed with suitable amount of water and must be broadcast after keeping it for 1 night
please ask kvk for how to use ground water for fish farming