I have a 55 gallon tank with 10 fairly young African Cichlids (Lake Malawai). They are just getting thier color. I am wondering if I should leave the light on all the time or in intervals. I guess I am wondering because they tend to get a little crazy(very agressive) when I turn the tank light out. I have lost a few fish at night. The owner of the pet store I purchase mine from said that he leaves his tank lights on all night on his Chiclids cause they tend to, as he says "Do things you normally wouldnt see with the tank light on". Should I leave my light on? I wouldnt think it would be good for the fish. Just wanting some opinions on this. Thanks!