👉 Taenioids are a group of marine gastropod mollusks that have a long, slender body with a short snout and a pair of large eyes. They are commonly found in freshwater habitats, but they can also be found in saltwater environments such as brackish water or estuarine habitats. The term "taenioid" comes from the Greek word taenia, which means "stomach," and "idiot," which means "hurt." This name suggests