island grouper

Scientific name Mycteroperca fusca
Descriptor Lowe
Year of description 1838
IUCN category VU
Family Serranidae
Genus Mycteroperca
Mycteroperca fusca Mycteroperca fusca

Introduction

Mycteroperca fusca, commonly known as island grouper, is a salt water fish from the Temperate Eastern Atlantic Ocean.

Who is it?

Morphology

  • Average size
    70 cm
  • Maximum size
    80 cm
  • Longevity
    20 year
  • Mimicry
    stone
  • Pattern
    ponctuations
  • Average size
    70 cm
  • Maximum size
    80 cm
  • Longevity
    20 year
  • Mimicry
    stone
  • Pattern
    ponctuations

How to recognize the island grouper ?

The island grouper measures around 70 cm. The dominant males can however reach 80 cm. This fish is bicolore with a predominantly argent and marron body. The also has argent ponctuations.

Sexual dimorphism

The adult male is bigger than the female.

Behaviour & Life cycle

  • diet
    carnivorous
  • Sociability
    solitary
  • territorial
    Yes
  • Way of living
    diurnal

The island grouper is a fish solitary naturally found at mid-depth and near the bottom. This species is carnivorous .

This species is territorial and does not appreciate the presence of intruders nearby, especially animals with similar behavior. It can also be virulent toward conspecifics. However, the island grouper has little concern for non-territorial animals. In a constant quest for dominance, the dominant males of this species cannot stand each other. The battle between two individuals can be intense and violent. It will result in the submission and sometimes even death of one of the protagonists.

Reproduction

  • Reproduction
    ovipare qui pond en eau libre
  • Hermaphrodite
    protogynous

The island grouper is a fish ovipare qui pond en eau libre. always born female. Growing up, individuals will change sex to become male, this is called successive hermaphroditism of the protogynous type.

Harmless species

This species does not represent any particular threats to humans when encountered in its natural environment.

Where to find it?

What is its habitat?

Natural environment characteristics

  • Temperature
    10 - 26 °C
  • Depth
    1 - 200 m
  • Flow
    Medium and Slow

Biotope presentation

The island grouper is most often found at a depth between 1m and 200m. However, it is not impossible to find this species at other depths.

To go further

Species of the same family

To read on the web

Sources & Contributions

Participation & Validation

The Fishipedia team and specialist contributors are committed to providing high-quality content. However, although the information comes from scientific sources or testimonials from specialists, the cards may contain inaccuracies.

Benoit Chartrer

Benoit Chartrer

Aurélien Calas

Aurélien Calas

Translation

Translation done with the valuable contribution of our translators, who make this information available to a wider audience. We sincerely thank them for their commitment.

Bibliographic references

Age estimation and growth pattern of the island grouper, Mycteroperca fusca (Serranidae) in an island population on the northwest coast of Africa - Rocío Bustos - Ángel Luque - José G. Pajuelo - Scientia Marina - 2009.

First record of the Atlantic island grouper Mycteroperca fusca in the Mediterranean Sea - Phillip Heemstra - Andrey Aronov - Menachem Goren - Marine Biological Association of the United Kingdom - 2010.

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