Potti 只可養淡水魚，較受歡迎的有金魚、小錦鯉、鬥魚、孔雀及米奇等。但要留意一開始用 Potti 時，只可養一條魚，2-3 星期後待水質穩定後才可慢慢加魚。水質穩定之後，體型在 6 厘米以上的魚類不可多過 5 條，短過 6 厘米的最多可養 10 條。Potti can only raise freshwater fish, the more popular goldfish, koi, betta, peacock and mickey and so on. However, keep in mind that when using Potti in the beginning, only one fish should be kept. After 2-3 weeks, the fish can be added slowly until the water quality is stable.
After the water quality is stabilized, no more than 5 fish of more than 6 cm in size should be kept up to 10 pieces shorter than 6 cm.