Does anyone own a blueboxfish

[Skimmer Juice]

Yes I tried pe mysis regular mysis,clams,spectrum pellets,have not tried brine or bloodworms.The fish is by himself in a 33 gallon tank I even tried sea veggies and regular sea weed sheets I will buy some bloodworms tomorow wich should be fine if there is nothing else in the tank correct?P.S I already own a yellow box but it seems the female (black box) And the blue ones never want to eat.I have also tried some angel fish food it has krill and sponge and a few other ingredients I also tried intice and soaking the food in garlic gaurd.