Twisting Fish is a term used to describe a type of fish that has the ability to twist its body in order to move through the water. The most common example of this type of fish is the eel, which is a four-letter word that can be used to solve the crossword puzzle. Eels are elongated fish that have a slimy skin and lack scales. They are found in both saltwater and freshwater habitats and can range in size from a few inches to several feet long. Eels are carnivorous and feed on other fish, crustaceans, and mollusks.