The easiest way to recover some cost right now, is either a, extremely rare/expensive fish, or inverts and plants. There are several freshwater inverts that will make quite a bit of money. This year I have made over $600 in snail sales, and over $1000 in plants. The snails have only been selling since march. However, finding what is needed in your area's market is the most essential thing. My ramshorns are bigger, and cheaper than most others in the northwest, and as such I can sell off huge amounts.