fighting

ok i have had my tank for about 2 months now and i got it for my son to teach my son about pets but i was told nothing about cycling a tank untill all but one of my fish died :( then the pet shop owner told me about it and gave me 3 zebra danios to start the tank now i have 4 zebra danios 1 auto...

My african cichlids will not hide in there caves that I have made for them, I have re-arranged the rocks more then once and they still dont hide. WHY? All they do is swim around up at the top of the tank beating on each other.... I had to start up a 10 gal hospital tank because my "Yellow lab"...