My fiance has a love for fish. its a huge part of his life so we decided to mix my love for roses and his love for fish for our centerpiece. our plan is to put a beta fish in all our centerpieces with a floating candle on top. the roses will be submurged in the water with the fish. Any one have any ideas how to do this without harming the fish? its pretty much a set plan but i just want to make sure we dont harm the fish. any ideas?