as a whole the anthias family is a little on the timid & fincky side. there are a few exceptions though i believe the lyretail anthias you're speaking of is the pseuda. squamipinnis which the best sp. to go with because they tend to be the most hardiest out of the group. in a 205 you could get a nice school going maybe up to about 8, but make sure if you buy them you only get one male which is the red variety you were describing with the rest being female the orange variety. also make sure none of the females are in the process of changing into a male as males will fight to the death.