The Heraldi Angelfish is a completely yellow dwarf angelfish that is sometimes confused with the lemonpeel angelfish which has a blue eye ring. It is semi-aggressive with most fish, but downright aggressive with other dwarf angelfish that are not mates. Dwarf angelfish and large angelfish are typically compatible, however. Use caution when housing this fish with corals; it may eat or damage corals, clams, and some inverts. Provide plenty of algae in its diet and also offer meaty foods like enriched Artemia, frozen mysis shrimp, and plankton.