The antennariidae are commonly called frogfishes. The unusual aspect of the frogfish is designed to hide against predators and also from the eyes of its prey. Their dress can change color and texture, and thus their unstructured form, color and texture of their skin are used to disguise. Some resemble a stone or coral while others mimic sponges or ascidians: Light colors are generally yellow or tan, while the darkest are green, black or dark red. The color change may last from several days to several weeks. We don't known what triggers this change.