Manonichthys

Manonichthys is a genus of ray-finned fishes from the subfamily Pseudochrominae, which is one of four subfamilies in the dottyback family Pseudochromidae. They are found in the tropical eastern Indian Ocean and the western Pacific Ocean. Many of the species of Manonichthys live within the bodies of large sponges, the genus name references the Greek word for a kind of sponge, manon, in combination with the Greek word for "fish", ichthys.