I've always heard the reason for adding dithers in general is to make cichlids feel more secure. They figure that if other fish are out and about, then the environment must be safe enough and they can venture out too.
Of course, with naturally outgoing cichlids, they'll enjoy having dithers around simply because they want something to chase/kill. But all of my cichlids have perked up after the addition of dithers, whether it's because they're shy or simply looking for something interesting to do.
Of course, with naturally outgoing cichlids, they'll enjoy having dithers around simply because they want something to chase/kill. But all of my cichlids have perked up after the addition of dithers, whether it's because they're shy or simply looking for something interesting to do.