bleak
| Scientific name | Alburnus alburnus |
|---|---|
| Descriptor | Linnaeus |
| Year of description | 1758 |
| IUCN category | LC |
| Family | Leuciscidae |
| Genus | Alburnus |
Introduction
Alburnus alburnus, commonly known as bleak, is a fresh water fish.
Who is it?
Morphology
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Average size12 cm
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Maximum size15 cm
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Longevity15 year
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ShapeOval
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Average size12 cm
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Maximum size15 cm
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Longevity15 year
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ShapeOval
How to recognize the bleak ?
The bleak measures between 12 and 15 cm. This fish is unicolore with a predominantly argent body.
Sexual dimorphism
The females have a more rounded abdomen than the males, they are generally stockier. This characteristic is exacerbated in the period of reproduction.
Behaviour & Life cycle
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dietcarnivorous
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Sociabilityliving in shoals
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territorialNo
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Way of livingdiurnal
The bleak is a fish living in shoals naturally found near to the surface. This species is carnivorous .
n general, this species does not care much about other animals crossing its path.
Reproduction
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Reproductionovipare qui pond sur substrat caché
The bleak is a fish ovipare qui pond sur substrat caché.
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
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Temperature10 - 20 °C
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pH (acidity)7 - 7.5
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gh (hardness)6 - 10
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FlowSlow and Stagnant
Biotope presentation
This animal evolves in areas characterized by a strong presence of vegetation (aquatic and marsh plants, decaying organic matter, roots...).
To go further
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.
Patrick 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
Les Poissons d'eau douce de France - Eric Feunteun - Jean Allardi - Philippe Keith - Biotope Edition - 2011. Collection Inventaires & Biodiversité, publication scientifique du Muséum
Where to see this species?
Tags
Species of the same family
Species of the same biotope
Scientific partners
