I had 2 Uarus for years. They ran the tank. I blame the big one for the death of my favorite and first Severum who was 8 years old when he died. They are cool fish but since one was involved with the death of my severum who was a pet to me. I have this thing against them I know it is wrong.
I had mine with all different kinds of Cichlids and Catfish. I had them with some tetras and I don't think they bothered them much my other cichlids did. They are cool fish.