I keep hearing how Jardini's are agressive. That you can't really keep them with anything. I hear that about a lot of fish and yet, there's always seems to be a lot that aren't so aggressive like my Jack Dempsey. Everywhere I've read, Jack Dempseys are agressive and were named afer the legendary boxer because of his aggression and tenacity. My Dempsey is the most timid fish in the tank. So my question is...anyone have a Jardini that isn't "so aggressive."