cali9dub
Member
Seeing as this post is a month old you may have already figured this out by now but the tusk and the parrot have similar feeding habits in the wild so you encounter aggressive behavior during feeding time. So much so that it might intimidate the eel. The tangs could very easily cause the same problems.
You have a very high bio load for that tank. Even if most fish are small now, you have a lot of high volume waste producers. Get that skimmer on 24/7 if you haven't already.
Got it all figured out, thanks for the input. By the way a quoyi parrotfish is an algae eating parrotfish and has no eating habits anywhere near the tusk !! Plus it is a fairly shy eater especially compared to the tusk !