Great personalites, eat anything, can be a real PITA to some fish when it wants to be, but overall its a real crazy actor. Mine follows me from one side of the tank to the other, and just sets there watching. He is forever cleaing out any nook and crany or hole he can make into a home and its often fun to fill those holes he uses up with chunks of rocks just to see him pull them out and carry them accross the tank and depost them in a pile just to free up his hole again. Mine "kisses" the glass n the tank whenever there is algae, and leaves his lip imprints all over the glass in the algae film. I was lookingta it one day and could not figure out how a snail could make a mark and skip a space and make another identical mark...I mean my tank glass was convered in marks that resemble a track a cow would make......then I seen the bicolor at work. He scrapes off the algae film with his lips.