Ok, there is a lot of questions going on with new african tanks. Many questions that can be answered by just doing a little research. I will start you off. You will find your questions answered. Questions like:
Why do my Mbuna fight?
Why do they hide all the time?
Do I need more than a one?

http://www.ratemyfishtank.com/articles/117
http://www.ratemyfishtank.com/articles/96
http://www.cichlid-forum.com/articles/l ... _setup.php
http://www.cichlid-forum.com/articles/compatibility.php
http://www.cichlid-forum.com/articles/feeding_mbuna.php
http://www.cichlid-forum.com/profiles/c ... .php?cat=2
http://www.africancichlids.net/articles ... and_facts/