You will need 25 lbs of forage fish for each lb of LMB you just put in. They will eat 10+ lbs per lb of LMB. The remaining 15 lbs will be your forage base. Do that on top of the FH. You have enough LMB (25 adults) for now. It is not the 25 LMB you will need to manage it is their thousands of offspring. That will be a big job. The LMB you just put in need BG in the 3 to 7 inch size to eat. Those LMB will not grow eating BG yoy and FH.