Hi! 😃 nice to meet you!😃
As for males and females...of any breed, I would do 1 male and whatever the rest females and you won't have aggression and I would place them all into your tank at once then they will become used to each other as they grow!😃
Hi, hon, again!😃
Well...we, my husband and I, have found that we like to order our babies because they are much more healthier being them from the actual breeders!😃 our favorite gentleman we purchase from is at (Vendor review prohibited), they are awesome! Anddd, soooo inexpensive. They have like this way of ordering that you can pick: small- insexed or you can choose medium (which is the case we did with the Blue Moori/Dolphins because we wanted a harem to be able to breed them, and you can order "large". This is what we like about him plus the babies have always been healthy for us. I don't know where you are but when he ships to us it's only $17 which it's terribly expensive to get some folks shipping to you; you know? Oh$😳 and he's very quick!!