So I bought my first pair of clownfish about 5 days ago and they paired very easily and immediately. 2 days later I noticed the smaller one was always by the flow outtake and would only swim vertically. I did a water change that day to make sure envy thing was good and while there was less water in the tank he seemed to be swimming fine. A day later and he is still doing the same vertical, awkward, swim and I noticed his pelvic fins are not out. The other clown is the female but gives the male no issues and let’s him do his thing. Please give me any helpful advice you might have, I really don’t want my first fish to die