I decided a month or so ago to keep only Barbs in my 95l tank so initially acquired 6 Albino Barbs and then this week added 6 Black Ruby Barbs, my question is then that I read that 6 is okay as far as numbers are concerned but 10 to 12 creates a happier group, so is that 10 to 12 of each? or will the two groups happily shoal together as I think my 95l would definitely struggle to hold 20+ Barbs and I would far rather understock than overstock.... Oh, and just to add, the tank is quite heavily planted so there is plenty of cover for them....