I want to start a barb tank (cherry barbs, rosy barbs & gold barbs) and I'm hoping somebody can fill me in on the numbers I'd need to keep. Do I need to keep them in full schools (6,6&6) or will they stick together? In other words will my fish still be happy if I kept say 4 Rosy Barbs, 8 Cherry Barbs, 4 Golden Barbs? Also I'm considering smaller breeds of corys such as Panda's or Pygmy. Ideally I'd love Albino's but I think I'd be pushing it. Any thoughts? It'd be a 30 breeder.