They seem to be very calm and relaxed, they have gotten along with all the tank mates they have had, large L47, other L27s, L24, large L29, L273, etc. We haven't noticed any unique habits but then again we don't have them in a tank in our living room to watch often enough to see any unique behaviors.Nice! I almost got one, but I don't have room right now. Let us know if it has any unique habits and how it gets along with others.