Common name: Pearlscale angelfish

General information

The Half Black Angelfish, scientifically known as Centropyge vrolikii, is a vibrant and popular species among aquarists. It is part of the dwarf angelfish group and is known for its striking coloration, with the front half of its body displaying a pearly white to yellow hue, and the back half a deep black. This species is often confused with the closely related Centropyge bicolor, also known as the Bicolor Angelfish, due to their similar size and color patterns.

Care

Centropyge vrolikii is a hardy species that adapts well to life in captivity. It requires a well-established aquarium with plenty of live rock for grazing and hiding. This species is known to nip at stony and soft corals, as well as clams, so it may not be the best choice for a reef tank with sensitive invertebrates. A varied diet of marine algae, spirulina, mysis shrimp, and other high-quality angelfish preparations will help maintain its vibrant colors and overall health.

Reproduction

In the wild, Half Black Angelfish are protogynous hermaphrodites, meaning they are born female and can change to male if the dominant male is removed from the group. In the aquarium, breeding is less common, but with a well-maintained environment and a compatible pair, spawning is possible. The male will fertilize the eggs as the female lays them, and the eggs will float in the water column until hatching.

Habitat

The natural habitat of the Half Black Angelfish includes coral reefs and lagoons in the Indo-Pacific region. They are typically found at depths ranging from 3 to 20 meters, where they swim among the corals and rock formations. Their geographical distribution spans from Indonesia and the Philippines to northern Australia and Micronesia.