Brotula is a genus of fish that typically inhabit deep waters. Synonyms for this word include cusk eel, sea bass, and rattail. Cusk eels are often found in the Atlantic Ocean, and they are known for their long, slimy bodies. Sea bass, on the other hand, are a type of saltwater fish that can be found in a variety of habitats including rocky and sandy bottoms. Rattail is another synonym for brotula, and these fish have a prominent tail that is covered in vertebrae. Regardless of the name given, the brotula fish is an interesting species that has unique adaptations for surviving in deep waters.