Your 10 Endler guppies will probably be made up of Preferably a few males and 7 females (or, at most, 4 males and 6 females). This is due to the males stress the females to mate, so there ought to be more females than males, or they get tired out https://griffinybyhi.shotblogs.com/a-review-of-shrimps-for-sale-pretoria-46711588