Hi,
Since you have a Coral Beauty, I would recommend varying the diet a bit more. All Angels need a good variety of foods to survive and thrive. I would suggest getting some seaweed selects for him to graze on, some formula 1 or 2 (angel formula), and maybe even some spirulina for him. All of the other fish will eat the formula 1 or 2 as well. The problem with brine shrimp only is that it does not contain many vitamins or plant nutrients that many fish need to do well. You could also try soaking your brine shrimp in zoecon or selcon to increase it's nutritional value, but I would still vary the diet for the Angel, they need greens to graze on.