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The Black Pearlscale, or Asian Butterfly is characterized by shimmering white coloration with two partial black bars, a black bar at the rear of the body, and a net-like pattern over the body. The tail is trimmed in black as well. Butterflies do best in a fish only tank because of their tendency to pick at sessile invertebrates and corals. In captivity they should be fed a combination of frozen and flake food fortified with vitamins, and some type of vegetative matter. They should not be attempted by beginner aquarists.