I have two which appear to be one male and one female. Received as a gift and moved from my community tank because I read they can eat small fish and I decided to add in some tiny ember tetras. I’m concerned about whether I should reintroduce them or just keep them separate. They’re in my 10g hospital tank right now. Larger one is maybe 1.5” so I feel like it’s enough space until I figure out what I’m going to do with them.