Who Gives A Fish Forums

We had a parrotfish in our tank and decided to introduce a Niger trigger. After researching, we didn't come across any reasons to think they wouldn't get along. The fish store attendant also assured us they'd be fine. Lately, though, they've been at odds, constantly mouth to mouth. Should we be worried or is it time to swap out the parrotfish for something else?

Give it time, could be the tank's a bit cramped. Aggressive fish, like the Niger trigger, need space and hideaways. My experience with a lionfish is similar, it tried to attack everything at first, but now it's pretty chill.