I have nano tank that is down two one clown and one wrasse. I had two clowns for around 3 years but one just died. The two had paired up and were always right on top of eachother since I got them years ago. I want to introduce another fish to the tank now but wanted to ask if it matters if I add a mature or juvenile clown at this point. Or should I just let the old girl live alone with her crazy wrasse roommate? The smaller one died which I was under the impression that that is the male when they pair up. Anyway, any input is appreciated.