One of my new bolivian rams is constantly chasing the other one around the tank. Now, when I say constantly, I don't mean all the time, but rather whenever he sees the other one, he sort of chases him and nips his fin and then just swims away. Now, I know that they ARE cichlids and this is normal behaviour, however I'm a bit worried of the one being chased being under too much stress, which would cause him to die. So I was wondering if I should get another Ram as a diverter, you know, so that the bully has two to annoy, and would reduce the stress for both fish? I have a 20 gallon aquarium and if it was bigger, I would do it without a question, but I don't want to overcrowd my aquarium so I'm asking you.