This thread is a compliation of fish which are deemed as NOT safe to add to a reef tank. There are many reasons why some fish are not compatible with reefs, and they are issues like coral nipping, clam mantle nipping etc etc..
Post the fish which is not reef safe, explain WHY it is not reef safe and add a photo to you post.
Post the fish which is not reef safe, explain WHY it is not reef safe and add a photo to you post.