Half-and-Half Chromis

The Half-and-Half Chromis is one of the most distinctively patterned Chromis species, with a clean two-tone coloration that divides the body almost exactly in half. The anterior and dorsal portion of the body is dark brown to black, while the posterior and ventral half is bright white to pale cream, creating a striking and instantly recognizable appearance. This bold pattern is maintained throughout their lives and is visible from a distance, making a school of these fish an eye-catching display.

Native to the Indo-Pacific, Half-and-Half Chromis are found on outer reef slopes and drop-offs where they form small to moderate-sized aggregations in the water column. They typically hover above coral structures at moderate depths, feeding on zooplankton carried by currents. Their natural habitat preference for areas with moderate flow and coral shelter is easily replicated in the home aquarium.

In captivity, Half-and-Half Chromis are hardy and easy to care for, suitable for beginning marine aquarists. They are best kept in small groups of three to five individuals in tanks of 30 gallons or more. Their manageable adult size of 3 inches and peaceful temperament make them versatile community fish. They are completely reef-safe and their unique black-and-white pattern provides an interesting visual contrast to the more typically colorful reef fish in a mixed community.