Species learning profile
Lamproie marine
Petromyzon marinus
Sea lamprey (Petromyzon marinus) is a brackish fish associated with river habitat in Atlantic. Its round mouth attaches like a suction cup during its parasitic adult stage.
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At a glance
- Eau
- Eau saumâtre
- Habitat
- Rivière
- Longueur maximale
- 120 cm
- Répartition
- Atlantique
- Famille
- Petromyzontidae
- Ordre
- Petromyzontiformes
Observe
How to identify Lamproie marine
- Mottled olive, brown, and yellow.
- Long and eel-like with seven round gill openings and a suction-cup mouth.
- Reported maximum length: 120 cm — capable of growing longer than many people are tall. Maximum is not the same as typical adult size.
Field note: color, size, and markings can change with age, sex, season, depth, and lighting. Use several traits together.
Place and pattern
Where it lives—and how it behaves
Habitat and range
This species is associated with river habitat across Atlantic. Flow, seasonal floods, connected side channels, and access to spawning reaches all shape its river habitat.
Behavior
Uses river habitat for feeding, shelter, migration, or reproduction.
Food-web connections
What it eats and why it matters
Diet
A species-specific mix of plant material, plankton, invertebrates, or other fish.
Ecological role
It participates in a connected river food web where nutrients and animals move both upstream and downstream..
Remember
One fact worth keeping
Lamproie marine peut atteindre environ 120 cm et vit souvent près de Rivière.
Think like a conservationist
A conservation lens
River fish depend on connected water. Dams, blocked migrations, pollution, and altered flow can matter even when the channel still looks wet.
This habitat lens is not a current population-status assessment. Status can differ among regions and change as new assessments are published; follow the reference links and local fisheries or wildlife agencies for current decisions.
Recall
Quick knowledge check
Which habitat is most closely associated with Sea lamprey in this guide?
Keep exploring
References and further reading
Fishdle summarizes stable identification and ecology concepts in plain language. Taxonomy and population knowledge continue to change, so use primary assessments and regional authorities for conservation or management decisions.
Make connections