I currently have two clowns in my 30 gallon tank. They are both small (maybe 2-2.5"). I don’t believe they are mated, they sometimes hangout in the same area, other times they are on opposite sides of the the tank. Occasionally they “flirt” with each other and chase each other a bit, but there’s no real fighting. I’m wondering, can I add a third (smaller) clownfish? Is that a terrible idea?