welcome, hmmmm not to sure about rams but i think any peacefull smaller fish are good and even bigger fish as long as they are not aggressive e.g angelfish
. Angels do well with most fish, just stay away from small fish like neons and guppies as the angel would eat them. Also stay clearer of more active fish such as barbs as these may nip angels fins, and course it stress. Some of my favourite angel tankmates are hatchet fish, festivum and corycats, u can see in my sig what i am planning on getting on my soon to come angel tank