ha ha ha dude dont listen to them i have 3 types of damsels n i guess it depends on each fish's personality but mynee all get along perfectly fine AS Long as tey have alot of ALOT of hidingplaced therfor all my live rock i made sure had cave in em, but my yellow tailed damsel and my 3stripe damsel sleep together lol its cool and my bowtie is huge but doesnt bully, if you do settle on any type of damsel i like myne personaly but if you do then before you get any fish like clowns or other ones when the tank is done cycling make sure u re-organize the tank because if the fish establich territories then they get man when others are introduced so by moving EVERYTHING around they drop their old territory and get used to the new fish and they each individually pick out a new territory without any trouble, but unfortianley u might havta do it everytime u get new fish....