Hard choice, I love them all. But right now, its fish. I know you can't pet them or play too much with them. But they have so much personality and I love the payoff of creating the perfect living environment and having beautiful healthy pets. I'm absolutely in love with my new pumpkinseed. He's aggressive :P and hates it when people look at him, but he's starting to get used to people walking up to the tank and doesn't hide so quickly. I love just watching him rearrange the tank to his liking and tear up the plants. When I went into that horrible pet store the other day the thing that sticks in my mind the most is the looks on the faces of the listless fish who were full grown and barely fit in the tanks. People don't think they feel pain and suffering, but I know they do.