In detail, there are two kinds of medical fish. One is called Schizophrenia, which belongs to marine fish. It is named "medical fish" because it can cure diseases and remove dirt for other fish. The other is called Xingzi fish, which is native to Turkey and lives in water at 2℃-4℃. It belongs to freshwater tropical fish and likes to peck at human skin metabolites. If you want to raise it in a seawater tank, it is definitely a cleft lip fish. This kind of fish should be raised with other fish. For details, you can go to the Longdian Marine Fish Forum!