Monkfish is commonly referred to as a “sea catfish” or “sea devil”. It is a deep-sea fish and lives at depths of up to 1,070 feet (330 meters). Monkfish is a fish that can grow up to 7 feet (2.1 meters) long. It is found in the Atlantic, Pacific, and Indian oceans. Monkfish are mainly found in the south-western Atlantic Ocean and the eastern Pacific Ocean. Monkfish are caught using traps or spears. It is used in a wide variety of dishes and is considered a delicacy. Monkfish is a type of fish that is not kosher-certified.  Monks are well known for eating fish. However, monkfish is not kosher food. Monkfish is a type of fish that has a long tail. The long tail is what makes it non-kosher.  The answer to this question is unclear. However, it is worth mentioning that monkfish is not kosher.