Sharp-toothed swimmers are a type of fish that have sharp teeth and are capable of swimming. MORAYS (6 letters) and Piranhas (8 letters) are two examples of this type of fish. MORAYS are eel-like fish that inhabit tropical and subtropical oceans, while Piranhas are freshwater fish found in South American rivers. Both species have sharp teeth and powerful jaws that enable them to feed on other fish and invertebrates.