Island Grouper

Mycteroperca fusca

The Island Grouper, known scientifically as Mycteroperca fusca, is a large fish found primarily in the Macaronesian Islands, including the Canary Islands, Azores, Madeira, and Cape Verde. This species is notable for its ability to change its body color when stressed, with adults typically displaying a brownish or dark grey body adorned with irregular pale blotches and spots. Juveniles, on the other hand, have a mottled greenish-brown appearance with prominent white spots on their head and body. The Island Grouper can grow up to 80 cm in length and is characterized by its oblong, compressed body and a prominent maxillary streak. Island Groupers inhabit rocky regions near the seabed, typically at depths ranging from 1 to 200 meters, though they are most commonly found between 20 and 30 meters. Juveniles are often seen in tidal pools, while adults prefer areas with crevices, caves, and seaweed for cover. They are predatory fish, actively hunting crustaceans, cephalopods, and fish, with a particular preference for species like Chromis limbata and Thalassoma pavo. This species is a protogynous hermaphrodite, meaning females can change into males, and they are known to form spawning aggregations from February to July in the Canary Islands. The Island Grouper is classified as Vulnerable on the IUCN Red List due to its limited range and the pressures of overfishing. Encounters with this species during dives are more likely in areas with less fishing pressure.