There are several kinds of leeches that cannot be left
Poor shape Persons with small size, deformity, incomplete limbs, or suffering from self-bite and chronic diseases should not be left to breed. Low fertility In general, there are not less than 4 females who are born at the beginning of the breeding season, and no less than 6 female mothers aged 4 to 5 who are under the age of 5 must be eliminated. Each year, breeding stocks should be bred with more than 4 females and the number of servings should be more than 10 times. Otherwise, they should be adjusted. Plush color change The color, luster, density, hair length, and evenness of distribution were used to identify the superiority and inferiority of the species. For example, dark brown male mantle becomes brown or light brown, the density is sparse, the distribution is uneven, the length is too long, and it is not uniform. Portable 3 Ply Disposable Masks Non-woven Face Mask With Elastic Earloops Disposable Surgical Face Mask Dongguan Anmeixuan Electronic Technology Co., Ltd , https://www.hyashine.com