"The Midnight Clownfish is a Black Ocellaris clownfish with no stripes. This gorgeous natural mutation was discovered in ORA’s grow-out systems and was selectively bred over the past several years. These fish are quite rare, only a handful are found in every spawn.
Just as with the natural Black Ocellaris, the Midnights start out life with an orange color that turns black as they age. Some of them morph into completely black adults and others retain a bit of orange on their face." - ORA Farm