Got a 55 for Christmas. Have been reading as much as I can on cichlids. I THOUGHT I was going to go with a firemouth and a convict, but now I think that I am going to go in a different direction. I want a few angels. Can I safely house 4 angels in a 55 gallon along with some larger tetras and a few kuhli loaches? Do I need to drop the number to 2 angels? Do I need caves for the angels? To me they don't look as though they would need / use a cave. Thanks!