They came from 5 females all within a week I trapped them up in large mesh traps because they tend to eat their own if given a chance & put lots of cabomba plants in with them to give lots of cover for the young as soon as they had them I took them out . I take them out of the tank and put them in that plastic container to check for fin rot , fungus & any other illnesses then return them to their own tank a couple times a week , another 3 weeks & I'll put them in with their parents & get ready for the females to have their next lot sometime in the following 7days .