Pseudanthias cooperi

Pseudanthias cooperi, commonly known as the Red bar anthias, is a medium-sized Pseudanthias species. They get more colorful the older they grow and males develop a red vertical bar on their side. Like all anthias, it's an active fish, which is best kept in a group/school of at least 4-6 fishes. When buying a school you don't need to worry about sex ratios because these fish are hermaphroditic. This means the most dominant fish will automatically turn into the male when there is no other male around.

Keeping this fish in larger numbers will definetely make it shine. Do make sure they can eat multiple times a day though, because in nature they feed on zooplankton the entire day, and are not build for one meal a day!