From Sea and Reef website:
Description The Midnight Clownfish is a designer clownfish that is a Black Ocellaris Clownfish (also called Darwin Ocellaris Clownfish) without stripes. Midnight Clownfish are brownish when they are very early juvenile and then develop their deep black coloration as they grow and mature. Some of the fish are jet black around 1 ¾”. The brown markings around their face are the last part to turn black.
Temperament & Captive Care The temperament and captive care requirements for Midnight Clownfish is very similar to that of the regular Ocellaris Clownfish. It is peaceful and hardy. They thrive in saltwater aquariums with or without an anemone present./p>
Feeding Most clownfish are omnivorous feeders, meaning that they will consume a variety of different food types. In nature the diet of clownfish consists of crustaceans (such as copepods and amphipods), algae, polychaete worms, and leftovers from the anemone’s meal. Sea and Reef captive bred fish are conditioned to eat a variety of aquarium diets including pellets, flake food, frozen Mysis shrimp, and frozen brine shrimp.