Monkfish: facts, seabed camouflage and its built-in fishing lure

The first dorsal-fin spine has become a movable fishing rod tipped with a fleshy structure. The fish can twitch it above the mouth while the rest of the body remains buried or still.

When prey approaches, the mouth opens rapidly and draws the animal inward. Backward-pointing teeth make escape difficult, allowing the monkfish to tackle prey that appears large for its body.

The species ranges from the Barents Sea and Iceland south toward the Mediterranean, Black Sea and north-west African coast. FishBase records it from roughly 20 to 1,000 metres.

It occurs mainly on sandy and muddy bottoms but can also use gravel, shell and rock. Camouflage changes with the background, which is why the same species can appear in several brown and green patterns.

There is no useful one-word answer for every monkfish sold. European landings can mix Lophius piscatorius with black-bellied anglerfish, and each management area has its own stock assessment and advice.

Consumers and writers should identify the species, catch area and current stock guidance. A global species description cannot substitute for regional fisheries evidence.