Not really new to the hobby just looking for a restart. I have a 10 gallon and 30 gallon tank. I raised guppies for over a yearr with those tanks and have someone who wants to buy all my guppies that I have. So I am looking for advice on what to do with the 2 tanks. Like what fish for each one. It can be simple cheap fish or exotic ones I am honestly open just looking for some input.