Acanthophyllia coral is a former stony coral genus that lives as a solitary polyp in the reef. It was monotypic with only one species, Acanthophyllia deshayesiana. Genetic studies have shown that the known populations were identical to Cynarina lacrymalis, so Acanthophyllia is normally referred to by that name in scientific circles today.

However, in contrast to the typical Cynarina coloration, the variants formerly running under Acanthophyllia often have more massive tissue expansion, grow much larger, and are usually not transparent, which is why we still make the distinction. Differentiation from other similarly growing corals causes problems for some people, which is why the distinction from Scolymia or Homophyllia or "Indophyllia" (which is now also counted as Cynarina) is sometimes fuzzy - many of these species are also called Donut Coral or "Meat Coral".

In principle Acanthophyllia is a good-natured coral, which has few demands on the water quality in the aquarium. The flow and light or illumination should be weak. As a rule, this stony coral only stings rather weakly, and can sometimes even have tissue contact with other corals such as Trachyphyllia without stinging them right away, but to be on the safe side, you should still place it at a distance. The tissue expansion can be tremendous if it likes the spot. It can be placed on the substrate very well. At night or when feeding, which is possible with pellets or frozen food, the coral shows an impressive tentacle ring at the oral opening, which is hidden under the tissue during the day. The animals are especially susceptible to mechanical injuries, which is why caution is required when handling them.

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