The Scorpionfish, which is also widely known as the Red Rockfish or the Black Rockfish, is the undisputed king of camouflage on the rocky Mediterranean seabeds. It belongs to the family Scorpaenidae and has a characteristic, almost monstrous appearance. The head is huge, armoured with bony plates, and full of spines. The body is stocky and covered with skin flaps that resemble seaweed or stones, allowing it to blend into the bottom.

In regional waters, we encounter two main species. The Red Scorpionfish is the larger and more commercial species. It has an intense red, orange, or pink colour and is distinguished by the many fleshy barbels on its lower jaw. The Black Scorpionfish is smaller, with a dark brown or olive-black colour. It has large eyes relative to its body and lacks the fleshy barbels on the jaw.

This is a strictly benthic species. The Red Scorpionfish lives mainly on rocky bottoms with coralligenous formations and stone at depths from 20 to 200 metres or even deeper. The Black Scorpionfish prefers shallower waters and Posidonia seagrass meadows and rocky coasts where it hides among the stones.

An important characteristic of these fish is that they lack a swim bladder. This means they have negative buoyancy and sink like a stone if they stop swimming. For this reason, they spend their entire lives motionless and pinned to the seabed.

The Red Scorpionfish is the largest species of the family in the Mediterranean. It can reach a length of 50 centimetres and a weight of 2 to 3 kilograms, although larger individuals have been recorded. The Black Scorpionfish remains smaller, usually reaching 25 centimetres.

The animal is the ultimate ambush hunter. It does not actively chase its prey. It sits completely still, relying on its perfect camouflage, and waits patiently. When a fish, crab, or mollusc passes within range, the Scorpionfish opens its huge mouth instantly. The sudden expansion creates a powerful suction that draws prey and water into its mouth within a fraction of a second.

Reproduction takes place during the warm months, from the end of spring through the summer, between May and August. The eggs of the Scorpionfish have the peculiarity that they do not float individually but are released together within a gelatinous mass that floats on the surface.

It represents a valuable catch for coastal fisheries. It is caught mainly with set nets, especially those intended for rocky areas, as well as longlines and handlines. It is an easy target because it is greedy and does not move.

The Scorpionfish, and especially the red species, is considered the king of the soup. Its head and bones are rich in gelatin, which yields an extremely thick, delicious broth and makes it an essential ingredient for authentic local fish stews. It is also excellent when grilled over charcoal or served as a fillet.

The International Union for Conservation of Nature classifies the Scorpionfish as a species of Least Concern. Scientific studies have shown that the Scorpionfish can periodically shed and renew its skin, possibly as a way to get rid of parasites and algae that grow on it due to its immobility.