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....
				
			
	            
 You'd definitely have to explain that to an American!