atlantic goliath grouper

Scientific name Epinephelus itajara
Descriptor Lichtenstein
Year of description 1822
IUCN category VU
Family Serranidae
Genus Epinephelus
Epinephelus itajara Epinephelus itajara

Introduction

Epinephelus itajara, commonly known as atlantic goliath grouper, is a salt water fish.

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Who is it?

Genus Epinephelus

In 2019, the genus Epinephelus comprised 87 species according to FishBase. These fish are commonly known as "groupers" and belong to the "serranid group" (Serranidae).

They are territorial carnivores with elongated and robust bodies. They have imposing heads with canines in the front of their jaws and protractile mouths. All species possess 10 or 11 dorsal spines.

Most species are found in coral reefs or rocky areas, with some exceptions (such as E. aeneus, E. bruneus, or E. areolatus) living in sandy, muddy, or silty bottoms. Adults are typically observed at depths ranging from 10 to 200 meters. Most Epinephelus are recognized as protogynous hermaphrodites, meaning they are born as females and become males as they grow. However, not all females may change sex, and some males may not go through this commonly accepted stage.

These fish are highly valued commercially for consumption and recreational fishing, but they are vulnerable to overfishing due to their slow growth, late maturity, and the formation of reproductive aggregations. Overfishing, particularly targeting mature individuals, can lead to sex-ratio imbalances and affect reproduction. Several groupers are now the subject of aquaculture farms (especially E. coioides and E. malabaricus).

According to the IUCN, overfishing and pollution have already caused a significant decline in the populations of many groupers, and several species are endangered.

Morphology

  • Average size
    150 cm
  • Maximum size
    250 cm
  • Longevity
    37 year
  • Pattern
    mottling
  • Average size
    150 cm
  • Maximum size
    250 cm
  • Longevity
    37 year
  • Pattern
    mottling

How to recognize the atlantic goliath grouper ?

The atlantic goliath grouper measures around 150 cm. The dominant males can however reach 250 cm. This fish is bicolore with a predominantly marron and blanc body. The also has marron and blanc mottling.

Sexual dimorphism

The adult male is bigger than the female.

Behaviour & Life cycle

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

The atlantic goliath grouper hunts in the stalk and is one of the predators of its biotope. Opportunistic, it does not hesitate to attack any smaller animal nearby.

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

The atlantic goliath grouper is a territorial animal that does not tolerate any incursions into its living area. It is particularly virulent against other territorial species and it can provoke heated fights. Relationships between conspecifics are also hectic, with each seeking to secure its place.

Reproduction

  • Reproduction
    ovipare
  • Hermaphrodite
    protogynous

The atlantic goliath grouper is a fish ovipare. always born female. Growing up, individuals will change sex to become male, this is called successive hermaphroditism of the protogynous type.

Risks for humans

  • Venomous
    No
  • Bite
    Yes

This species can attack if it feels threatened. It is important to be particularly vigilant especially during dives or fishing sessions.

Where to find it?

What is its habitat?

Natural environment characteristics

  • Temperature
    23 - 28 °C
  • Depth
    0 - 100 m

Biotope presentation

The atlantic goliath grouper is most often found at a depth between 0m and 100m. However, it is not impossible to find this species at other depths.

Species of the same biotope

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.

Adrien Falzon

Adrien Falzon

Benoit Chartrer

Benoit Chartrer

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

Mercury and histopathology of the vulnerable goliath grouper, Epinephelus itajara, in U.S. waters: a multi-tissue approach - Douglas H Adams - Christian Sonne - Elsevier Ltd - 2013.

The influence of spear fishing on species composition and size of groupers on patch reefs in the upper Florida keys - Sluka RD - Sullivan KM - department of biology, University of Miami - 1998.

The Effects of Fishing, Climate Change, and Other Anthropogenic Disturbances on Red Grouper and Other Reef Fishes in the Gulf of Mexico - Felicia C Coleman - Christopher C Koenig - Oxford University press - 2010.

Le mérou géant (Epinephelus itajara) Synthèse bibliographique - David Fransolet - Université des Antilles et de la Guyane - 2014.

Preliminary investigations of reproductive activity of the Jewfish, Epinephelus itajara (Pisces: Serranidae) - Patrick L. Colin - Caribbean Marine Research Center - 1990.

Historical declines of goliath grouper populations in South Florida, USA. - Loren McClenachan - Inter-Research Science Publisher - 2009.

FAO Species Catalogue. Vol. 16. Groupers of the world (family Serranidae, subfamily Epinephelinae). - Heemstra, P.C - J.E. Randall - FAO Fisheries Synopsis - 1993.

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Species of the same family

Same genus

Species of the same biotope

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