I did a good bit of research on Pacman, got one yesterday. It's a good bit smaller than a baseball but bigger than a half dollar, can he go in a 5 gallon? I have a 10 gallon now, but it just looks too big. Last night all I did was watch him and surf the computer. He's awesome but he chills in one spot. This makes me wonder if he could be in a 5 gallon and be happy for a while at least. Also, how do you.... If possible.... sex one? Thank you so much and I'm sorry if these questions have been answered, I'm really bad at navigating forums.