The Chameleon Whiptail (Pseudohemiodon apithanos) is perhaps the most sought after whiptail available today. Due to their unique ability to rapidly change colors when disturbed or placed over different substrate, they are the most striking of whiptail catfish. Long filaments extend from the tips of the caudal fin. They have many whiskers around the mouth, which are used to locate food in the sand. As a defense mechanism, they will quickly bury themselves under the sand, leaving only their eyes visible.