Platinum Green Tiger Barb Puntius tetrazona var. Other names: none. Just like other barbs, these fish are very active, but still you may find them mid-tank or lower. These fish should also be kept in larger groups to that they don't become aggresive. Some barbs will get shy when left alone, but these will not. They will a range of things, from tropical flakes, to pellets, freeze dried, or frozen fish.