blacktip grouper

Scientific name Epinephelus fasciatus
Descriptor Forsskål
Year of description 1775
IUCN category (World) LC
Family Serranidae
Genus Epinephelus
Epinephelus fasciatus Epinephelus fasciatus

Introduction

Epinephelus fasciatus, commonly known as blacktip 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
    22 cm
  • Maximum size
    40 cm
  • Pattern
    vertical stripes
  • Average size
    22 cm
  • Maximum size
    40 cm
  • Pattern
    vertical stripes

How to recognize the blacktip grouper ?

The blacktip grouper measures around 22 cm. The dominant males can however reach 40 cm. This fish is bicolore with a predominantly rouge and blanc body. The also has orange vertical stripes.

Sexual dimorphism

The adult male is bigger than the female.

Behaviour & Life cycle

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

The blacktip 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 blacktip 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 blacktip grouper is generally peaceful with non-territorial animals that cannot be potential prey. 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 blacktip 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?

Where to see this species?

What is its habitat?

Natural environment characteristics

  • Depth
    20 - 45 m

Biotope presentation

The blacktip grouper is most often found at a depth between 20m and 45m. 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.

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

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 biotope

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