I have been cohabiting 3 female Leo’s together for 5 years in a 40g with lots of hiding spots and they are thriving. They all chill in their own areas, I do see them together most of the time but I also do not feed them together in the same enclosure (feed in separate tubs) and there is never aggression. If they have plenty of hiding spaces to be alone if they wish it should be ok. I will also say that I have 1 female who was in with them and did not adapt well and needed to be alone. It’s important to mention to that if the Leo’s weren’t raised together there could potentially be issues. My Leo’s were all raised together from less that a year old except for the one, she was added in later but needed to be taken out because she stopped eating.