My point , the op has spongeRegal angels are delicate fish for sure, especially when first introduce to captivity. If you want to keep regal angels, they need to be by themselves with dither fish to help them eat. Once they are eating well and gain weight, then they should be introduce to DT. It is best for them to go in the tank first before a lot of the more aggressive tangs and angels. I would not get medium to large Regal angel. Small ones are best to get use to captivity. They eat absolutely everything once acclimated, with flakes and pellets being their favorite food.