An interopercular bone is a small, plate-like structure found in the gill covers of certain fish species. This bony element, situated between the preoperculum and the suboperculum, plays a crucial role in the functioning of the fish's respiratory system. While there are no direct synonyms for the term "interopercular bone", it is often referred to as the interopercle or interoperculum. These terms are used interchangeably to describe this specific bone. Understanding the nomenclature associated with fish anatomy is important for researchers, ichthyologists, and fish enthusiasts alike, as it enhances our comprehension of these remarkable aquatic creatures.