Are Red Snooks difficult to keep? I would like to put one with an oscar (don't have yet), a senegal bichir (don't have yet), an EBJD (don't have yet), 2 green severums, and 4 blood parrots in my 125 gallon. I know that they get pretty big, but are they super aggressive like red devils, convicts, dovii, or jaguar cichlids?