Nonexistent species, often mistaken identity.

Leptodactylus fallax, commonly known as the mountain chicken or giant ditch frog, is a critically endangered species of frog that is native to the Caribbean islands of Dominica and Montserrat.

Colocasia fallax, the silver leaf dwarf elephant ear or dwarf taro, is a species of flowering plant in the family Araceae, native to the Indian Subcontinent, Tibet and Yunnan in China, and mainland Southeast Asia.