Beautiful fish. Getting the fish to eat out of the column is not difficult when the fish is already eating shell fish on the shell. When you feed it shell fish, does it drop to the bottom? If so, that's the problem. You have to change its eating habit. To start, clip the shell fish onto the side of the glass. You can also score the shell fish with a razor a couple times so that when it bites on it, little pieces fall off. At first, it may not know what to do with the falling pieces but it will learn that it's food and will eat them pretty quickly. After the regal has been eating food on a clip, you will see that it comes up for you when you get near the tank. It thinks food is coming.
Now you can take the same food it eats(Although you really want to vary its diet, feed other stuff including pellets and flakes) and cut it up and use a turkey baster to feed it. When the fish comes up for food, spray the food out slowly and see what it does. It may not like it at first but keep trying. Offer food on a clip if it's really not eating the food from the turkey baster. My angels also comes right up to the baster and eat from it.
You really have to study the fish and know what it wants to do and slowly persuade it to what you prefer it to do. It takes some time but once you got an angel eating(anything and anyway), it will eat whatever you feed them and however you feed them. They are very robust fish.
