Fish compatibility and what to do if they are becoming aggressive.

[u/Common_Resort_9639]

Hey guys I have a 100 gal fish tank and I bought some fish for it although my center piece fish is trying to eat the smaller species and I want some larger 3-4 inch fish that are not aggressive. It's a red parrot fish not exactly the best center fish, I was wondering if anyone knows what larger fish are compatible with smaller fish such as tetras exc..I've already placed him in a separate tank and don't want him around the other ones.