Best way to add 2-3 more female bettas in with Athena?
Currently I have one female betta (Athena) and one nerite snail in my 10 gallon tank, and I've read everywhere that if I want more female bettas it's best to keep them in a school of 3 or more (correct?). Athena is not aggressive or violent; when I added my snail a couple days ago she was very curious but minded her own business most of the time - although I know it's a snail and not another fish, so that doesn't really account for much in terms of her possible reaction.
If I do decide to get more female bettas, first of all how many would be an ideal number? And I've heard of people removing their first bettas, rearranging the tank, and then adding all bettas at once - is that something that works well? If you have added more females to your existing betta tank, how did you do it? Any advice would be great, thanks!
Athena the Female Crowntail Betta
RIP Leo the Nerite Snail
Wishlist: Black Orchid CT
Tiger Nerite Snail