... meal, also known as tea seed cake, was a purple-brown particles,which was remaining after oil extraction ... scum. The tea meal containing tea saponin,is a hemolytic toxin, it can melt fish erythrocytes, it ... , leeches, and snails, mussels, clams, and has a protective effect on aquatic plants. 2, Used as feed ... Best stick with the 2 to 3 times a month, have a preventive effect and control of treatment on ...