The Mottled Grouper, which is also commonly referred to as the Red Grouper or the Comb Grouper, is a beautiful and impressive fish of the Serranidae family. It is a close relative of the Dusky Grouper and the Goldblotch Grouper. Although it resembles the Dusky Grouper, it possesses clear differences that make it a more athletic and agile hunter. The body is more elongated, compressed, and hydrodynamic, in contrast to the bulky, heavy body of other groupers.

The colour is its most characteristic feature. It has a deep reddish-brown or brick-red colour on the back and sides, often bearing light spots or wavy lines that form faint patterns. The lower part of the head and the belly usually have a lighter colour. Its lower jaw protrudes strongly forward, giving it an aggressive appearance.

This is a bottom-dwelling species that lives mainly on rocky bottoms, but with an important distinction. Unlike the Dusky Grouper, which is static and stays near its cave, the Mottled Grouper is much more mobile. It likes to hover and hunt actively in the midwaters several metres above the seabed. It prefers areas with intense relief, such as underwater cliffs and drop-offs, and isolated reefs at depths usually ranging from 15 to 100 metres, although it can descend deeper.

Fisheries & Economic Value

It is considered one of the highest quality and most delicious fish in its category. It is caught by professionals with bottom longlines and nets. For recreational fishers, especially spearfishers, it is a valuable yet difficult trophy because of its mobility and shyness. It is also caught using techniques such as jigging and live-bait fishing. The meat is white and firm, with an excellent flavour reminiscent of Dusky Grouper, and is ideal for soup or grilling.

The International Union for Conservation of Nature classifies the Mottled Grouper as Data Deficient globally, but its populations in the Mediterranean are considered to be under pressure. Scientific studies have shown that it often competes for food and space with other large predators such as the Dusky Grouper. However, its ability to hunt in midwaters gives it an ecological advantage by allowing it to exploit resources that other bottom-dwelling predators cannot reach.