The fruit in the genes Opuntia is commonly known as Prickly Pear. Prickly Pear is a pear-shaped edible fruit. The fruit is also called Nopal or Indian Fig. The fruit grows from the edges of thorny leaf-like stems. It's a type of cactus with prickly fruits. Prickly pear cactus is native to the United States, Mexico, and South America, it grows well in many areas of the world, including Africa, Australia and the Mediterranean.. They can stand long periods with little water, but they grow better with moderate rainfall.