AngelFish Secrets Reveals here! Compatibility: For the most part, Angelfishes can be real bullies. Being very territorial and aggressive, these fish will particularly fight with species of their own kind and sex and other related and non-related fishes that are similar in appearance, color, shape, or behavior. The smaller Centropyge genus, medium-sized Chaetodontoplus, Genicanthus, and a few other genera species in this group do well in a non-aggressive fish community with other non-related species like Anthias', Butterflies, Gobies, Blennies, Tiles, and such. Other larger Holacanthus and Pomacanthus genera species communes well with less-passive tank mates, such as Triggers, Hawks, Groupers, Damsels, and Surgeonfishes. Most Angelfishes live a solitary life, but some wander the reef in small groups of two or three, usually mated pairs or trios of one male and several females. It is not uncommon for multiple males and sometimes females placed in the same aquarium to fight to