IMO no large angel should be kept in a 4ft tank. I belive a 150 tall is just a taller 120 (48x24x30). Red coris wrasses get like a foot long, to small too. A tusk wouldn't be a bad suggestion. It's hard to have a big nice fish for a FO tank in a 4ft long tank, most fish need 6ft atleast of swimming length.
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