Synbranchus marmoratus

Scientific name Synbranchus marmoratus
Descriptor Bloch
Year of description 1795
IUCN category LC
Family Synbranchidae
Genus Synbranchus
Synbranchus marmoratus Synbranchus marmoratus


Synbranchus marmoratus is a fresh water and brackish water fish from the Amérique du Sud.

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Who is it?


  • Average size
    120 cm
  • Maximum size
    150 cm
  • Shape
  • Mimicry
  • Pattern
  • Average size
    120 cm
  • Maximum size
    150 cm
  • Shape
  • Mimicry
  • Pattern

How to recognize Synbranchus marmoratus ?

Synbranchus marmoratus measures between 120 and 150 cm. This fish is bicolore with a predominantly orange, marron, beige and gris body. The also has noir ponctuations.

Behaviour & Life cycle

  • diet
  • Sociability
  • territorial
  • Way of living

Synbranchus marmoratus is a fish solitary naturally found on 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, Synbranchus marmoratus has little concern for non-territorial animals.


  • Reproduction
  • Hermaphrodite

Synbranchus marmoratus is a fish ovipare. This fish always born male. Growing up, individuals will change sex to become female, this is called successive hermaphroditism of the protandrous 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
    22 - 34 °C
  • Flow
    Slow and Stagnant

Biotope presentation

The acidification of water comes from the decomposition of plants. This phenomenon changes the color of the water, which tends to turn brown. In some areas particularly rich in organic matter, the water is so dark that it is called "black water".

Synbranchus marmoratus is most often found at a depth between 0m and 2m. However, it is not impossible to find this species at other depths.

Species of the same biotope

To go further

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

In collaboration with : Estudios Amazónicos - Urku

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Species of the same biotope

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