What is "lophius"

Members of the genus Lophius, also sometimes called monkfish, fishing-frogs, frog-fish and sea-devils, are well known off the coasts of Europe. To the North Sea fishermen, this fish is known as the "monk," or "monkfish", a name which also belongs to Squatina squatina, the angelshark, a fish allied to the skates. The north European species is Lophius piscatorius, the Mediterranean species Lophius budegassa.