Selenicereus anthonyanus, commonly known as the fishbone cactus or zigzag cactus, is a species of cactus native to Mexico. It is a climbing cactus with long, flat, succulent stems that grow in a zigzag pattern, giving it its common name. The stems are covered in small, white spines and can grow up to 3 feet (91 cm) long. The plant produces fragrant, white flowers that bloom at night and are pollinated by bats.