I read that Barbs require at least 30 gallons and the white clouds have to be in schools. I can't fit many fish into a 10 gallon tank that is already a little more than half full. I don't know enough about shrimp, so I'd rather stay away from them. I wanted to try an ADF but I read that they can be a little tough for beginners, so I will wait on that. If I have to just keep the 3 Bettas in the tank with some snails, I'll do that, but I was hoping to add a little something else to look at. I was considering the Bleeding Heart Tetras because I wanted a different body shape. If they won't work I was also thinking of adding a couple Sparkling Gouramis since I will be buying them for my 20 gallon tank anyway.