No they are not. If you are thinking of keeping them, find your self an expert.
Malawis for example, shoal together, but only refrain from attacking each other because they are distracted by the movement of their fellows. They need a four foot ( one and a half metre) tank at least or they will kill each other.
I haven't even mentioned S. American cichlids, which are different and equally tricky.
Do the fish and yourself a favour and leave them alone.
If you have to ask such a silly question you don't know what you are doing.