Definition: Didois2 refers to a type of fish found in many tropical regions, especially in India and Africa. It's commonly known for its large size and vibrant color. This fish has distinctive characteristics including its white fins (also called "dodiis" or "white duniya") which are distinctive as they appear to be the color of an Indian duniya, a type of traditional Indian saree. The word itself appears in various ancient Hindu texts as a synonym for the same meaning and is often used metaphorically, indicating it represents something unique or rare.