hi guys! i have two Oscellaris Clowns that i purchased the first week of May. they’ve been doing well, they bicker from time to time but now they are definitely more physical. i am a little concerned about one of them who swims normally at the top of the tank and eats well, but at times will go to the bottom and shake (video below). Water parameters are good and i know clowns are hardy and can withstand some fluctuations but i appreciate any help! i’ve read online the shaking could be a male being submissive but he also does a majority of the antagonizing.