Depending on what other fish you plan to have in your tank, you probably couldn't keep many gouramis in a 10 gallon (if you're going to have a community tank). Most types of gouramis, besides the dwarfs, will get too large for a 10 gallon tank. I'd suggest dwarf gouramis - either one male, or one male and one female (avoid getting two males!). However, with the m/f situation you may find the male harrasses the female so keep an eye on them. Your best best with these guys is to get one male. They're great fish, just very territorial. My two male dwarfs fight constantly - I had to purchase a new tank to seperate them. Good luck!