Half Black Angelfish, like its name, is half black and half pearled the coloration. It will require at least a 70-gallon tank, with plenty of hiding spots. The Half Black Angelfish ought to be the only small angelfish in the tank. It It is not a reef dweller and can consume soft coral polyps mantles of clams and zoanthids. It's extremely hard to breed in aquariums, and there is no distinct distinction in color between males and females. A diet for half black angelfish Half Black Angelfish should include Spirulina and marine algae mysis shrimp, as well as other meaty dishes, and live rock to eat.