Yesterday my larger of 2 clowns wouldn’t let the smaller clownfish up from the bottom. Kept pushing him down. I thought it was just bullying or male dominance since they’re both males. Or the change from male to female but now I noticed the clown is on the opposite side of tank swimming upside down in the sheltered area near the defroster feeder. I opened the lid and he swam back down and then minutes later right back to swimming upside down. I checked all the water parameters and everything seems fine. Don’t notice and visible ailments. Any ideas what’s wrong? Here’s a video. Appreciate everyone’s input. Thanks