i have 2 bolivian rams in my community tank and their fine very friendly (they take a interest in you) i reccomend them!
if ya want some fun fish suggestions - khuli loaches are fantastic (buy them in groups) i have 3 together and they play and scuffle around, and are very peaceful with other fish
also another great tankmate is a African Dwarf frog - they are by far my most entertaining animal very friendly too!
I agree with Sammy, I have four black Kuhli loaches, not as colourful as normal Kuhlis but they are great to watch as Sammy said they play all over the tank and are fun to watch.