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National network

Freshwater non-indigenous species (NIS)

ALIEN Freshwater

Freshwater habitats also host introduced species, some of which become invasive. The ALIEN Freshwater network brings together divers, hikers and naturalists to report their presence in rivers, lakes and ponds, and to follow how they spread.

Record my observationsSee the species to report
ALIEN Freshwater network logo
  • 46
    non-indigenous species monitored
  • 2
    observation approaches
  • 8
    taxonomic groups
  • 7
    ALIEN networks in France
Printable PDFFor signed-in members

The ALIEN Freshwater species leaflet

All the species of the network in a printable document, to take diving or along the shore: photo, name, group, number of observations in the network and tick boxes.

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Free sign-up (in French)

Species to report

Two complementary approaches: on foot along the banks, or underwater — scuba diving, snorkelling and freediving.

Showing 46 species (of 46)

How do I take part?

  1. I observe

    While scuba diving, snorkelling, freediving or on foot along the shore and the strandline.

  2. I take a photo

    A photo, even an imperfect one, lets the validator confirm the identification.

  3. I record my survey

    In my BioObs logbook: species, habitat, date and place.

  4. The data travels on

    Once validated, it feeds the ALIEN Freshwater network and national programmes.
Create my survey

A question about an identification? Write to us.

The spirit of the network

Better understanding potentially invasive species and controlling their spread: this is the goal BioObs works towards alongside its partners.

Read the definition on the OPEN participatory science portal (in French) (opens in a new tab)

The other ALIEN networks