it has a single white head bar that is often poorly developed and lacking a pronounced black margin.

[2] Some anemonefish species have color variations based on geographic location, sex and host anemone.

A. frenatus is similar however males are entirely bright red and the white head bar is more vivid on females.

Like corals, anemones contain intracellular endosymbionts, zooxanthellae, and can suffer from bleaching due to triggers such as increased water temperature or acidification.

[7][8] A. rubrocinctus has only one of these characteristics, being a small geographic range and its ability to use two different anemone hosts may reduce the risk of extinction associated with extreme specialisation.