Sealife guideThe dusky grouperEpinephelus marginatus

Last updated on 08/21/2024 at 10:43 PM
There are several species of groupers found around the world, including the dusky grouper, the big star of the French Mediterranean coast and more generally of the Mediterranean.
Taxonomy
  • Common name: Dusky grouper
  • French name: Mérou brun
  • Spanish name: Mero nebuloso
  • Scientific name: Epinephelus marginatus (Lowe, 1834)
  • Family name: Epinephelidae
  • Order name: Perciformes
  • Class name: Actinopterygii
Description
The dusky grouper measures around 3 feet and can reach up to 5 feet in length.
The dusky grouper has a brownish coloration either solid or mottled with yellow spots depending on the individual
The dusky grouper has a brownish coloration either solid or mottled with yellow spots depending on the individual
Oval in shape, the grouper has a long dorsal fin and is characterized by a mouth surrounded by thick lips.
The dusky grouper has a brownish coloration either solid or mottled with yellow spots depending on the individual.
Geographic range
The dusky grouper is found in the Mediterranean Sea and the Atlantic Ocean, ranging from South Africa to Portugal.
Habitat
The dusky grouper is a sedentary fish that lives close to the seabed, sheltering in rocky crevices or under rocky overhangs.
Its territory typically includes several shelters with one of them being regularly frequented.
The dusky grouper can be found at depths ranging from 16 to 33 feet down to approximately 656 feet.
Diet
The dusky grouper primarily feeds on fish, crustaceans and octopuses.
Reproduction
The dusky grouper has the unique ability to change sex once in its lifetime. It starts as a female at a young age and becomes a male around 10 to 15 years old.
Did you know ?
The dusky grouper can live up to 50 years.
Despite its bulky appearance, it is capable of rapid acceleration to catch its prey.
Fishing with hooks and spearfishing for the dusky grouper (Epinephelus marginatus) are banned along the entire mainland Mediterranean coast. This moratorium on grouper fishing was extended by a prefectural decree on 12/17/2007 until 2013.
Tips for observing
The dusky grouper is not very shy and can be easily approached as long as no sudden movements are made.
Encounter with a dusky grouper
Encounter with a dusky grouper
The video gallery

A dusky grouper (Epinephelus marginatus) waits under the shelter of a rocky overhang

Within the same genus
Blacktip grouper (Epinephelus fasciatus)
Blacktip grouper
(Epinephelus fasciatus)
Camouflage grouper (Epinephelus polyphekadion)
Camouflage grouper
(Epinephelus polyphekadion)
Giant grouper (Epinephelus lanceolatus)
Giant grouper
(Epinephelus lanceolatus)
Honeycomb grouper (Epinephelus merra)
Honeycomb grouper
(Epinephelus merra)
Nassau grouper (Epinephelus striatus)
Nassau grouper
(Epinephelus striatus)
Potato grouper (Epinephelus tukula)
Potato grouper
(Epinephelus tukula)
Red hind grouper (Epinephelus guttatus)
Red hind grouper
(Epinephelus guttatus)
Speckledfin grouper (Epinephelus ongus)
Speckledfin grouper
(Epinephelus ongus)
Within the same family
Bluespotted grouper (Cephalopholis cyanostigma)
Bluespotted grouper
(Cephalopholis cyanostigma)
Darkfin hind (Cephalopholis urodeta)
Darkfin hind
(Cephalopholis urodeta)
Gag grouper (Mycteroperca microlepis)
Gag grouper
(Mycteroperca microlepis)
Highfin coral grouper (Plectropomus oligacanthus)
Highfin coral grouper
(Plectropomus oligacanthus)
Peacock grouper (Cephalopholis argus)
Peacock grouper
(Cephalopholis argus)
Redmouth grouper (Aethaloperca rogaa)
Redmouth grouper
(Aethaloperca rogaa)
Roving coral grouper (Plectropomus pessuliferus)
Roving coral grouper
(Plectropomus pessuliferus)
Tomato grouper (Cephalopholis sonnerati)
Tomato grouper
(Cephalopholis sonnerati)
Discover also
Blackspot snapper (Lutjanus ehrenbergii)
Blackspot snapper
(Lutjanus ehrenbergii)
Blue tang surgeonfish (Acanthurus coeruleus)
Blue tang surgeonfish
(Acanthurus coeruleus)
Multibarred angelfish (Paracentropyge multifasciata)
Multibarred angelfish
(Paracentropyge multifasciata)
Onespot snapper (Lutjanus monostigma)
Onespot snapper
(Lutjanus monostigma)
Redfin emperor (Monotaxis heterodon)
Redfin emperor
(Monotaxis heterodon)
Sea goldie (Pseudanthias squamipinnis)
Sea goldie
(Pseudanthias squamipinnis)
Sharptail eel (Myrichthys breviceps)
Sharptail eel
(Myrichthys breviceps)
Surge wrasse (Thalassoma purpureum)
Surge wrasse
(Thalassoma purpureum)
The marine species from Mediterranean sea
European conger eel (Conger conger)
European conger eel
(Conger conger)
Forkbeard (Phycis phycis)
Forkbeard
(Phycis phycis)
Giant doris (Felimare picta)
Giant doris
(Felimare picta)
Marine peacock's tail (Padina pavonica)
Marine peacock's tail
(Padina pavonica)
Neptune's lace (Reteporella grimaldii)
Neptune's lace
(Reteporella grimaldii)
Purse codium (Codium bursa)
Purse codium
(Codium bursa)
Spinous squat lobster (Galathea strigosa)
Spinous squat lobster
(Galathea strigosa)
Spiny starfish (Marthasterias glacialis)
Spiny starfish
(Marthasterias glacialis)

Our latestUpdates

Disney Hollywood Studios, from Star Wars to Toy Story
Friday, November 28th 2025
Disney Hollywood Studios, from Star Wars to Toy Story
Dive into the magical world of Disney's Hollywood Studios: Star Wars and Toy Story attractions and shows for the whole family.
Tenerife island
Wednesday, November 19th 2025
Tenerife island
Tenerife, the largest of the Canary islands, is a volcanic gem in the Atlantic ocean. It boasts an incredible variety of landscapes, from golden or black sand beaches to the subtropical forests of the Anaga mountains and the majestic Teide volcano, Spain's highest peak. With its picturesque villages, rich local culture and countless outdoor activities, Tenerife is a perfect destination for every type of traveler.
Batz island
Saturday, November 15th 2025
Batz island
Located in the English Channel off the northern coast of Brittany, just a few kilometers from the town of Roscoff, Batz island is a true little haven of peace where you can enjoy its wild landscapes, unspoiled beaches and historical heritage.
Photo of the Day
Rouget barbet doré (Parupeneus cyclostomus)
Rouget barbet doré
(Parupeneus cyclostomus)