ID Please

I bought this as a yellow and black angler. I couldn't find anything on the web that match the descriptions. In addition, he is already 5"+. Isn't angler usually won't grow over 5"?
 
OMG, he ate my valentini puffer last night. The puffer is 4", slightly smaller than the angler. Fortunately, my other fish are eels and trigger. They will be ok.
 
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