hi
we just gave 25 of our biggest swordie fry to our lfs, a lot wont take baby fish from you unless you are a registered breeder so i doubt if you could get money but they may like ours did give you something in exchange ( we got a tub of fishfood) we were just glad we could rehome some of ours our batch was of 50 babies we didnt think theyd all survive but they have, we still have about 30 in the fry tank growing out & then we'll have to find homes for them as well. can you advertise in a fish forum or local paper??? at work,school?? anywhere you can think of.
good luck