You shouldn't mix species of clowns.
I had subscribed to that theory right away as well; but then numerous resources stated that " no, it will be fine", "90g is large enough", "one may be aggressive at first but it will subside", and yadda yadda yadda.
Things seem a little more civil in the tank this afternoon. See what happens tomorrow I guess.
I drop mysis shrimp in all the time but it seems like hardly any of it reaches the bottom.
That saddle clown is absolutely tenacious when it comes to food.