I'm going off to college soon and I'm thinking I'd like to set up a 10-gallon 'oddball' fish tank while I'm there. I'd love to keep mudskippers, but they can *technically* live out of water so that's a no-no. I really like the idea of keeping two dwarf puffers, but other than that I'm sort of drawing a blank. What are some other unique/interesting fish that can thrive in a 10g tank?