agreeing with all that was written above, that is a pretty broad question, ('kinda like, whats your favorite song, of all time?') each fish seems to have its family characteristics. My wife loves her Angel fish, they seem pretty funny in the way they 'greet' you every time you come by the tank. I love my Paradise fish, he seems pretty smart, very hardy, and colorful. Problem with both fish is tank compatibility which is why they are in two separate community tanks.