diff --git a/plesna/storage/metadata_repository/fs_metadata_repository.py b/plesna/storage/metadata_repository/fs_metadata_repository.py
index ba07431..a7f5b3e 100644
--- a/plesna/storage/metadata_repository/fs_metadata_repository.py
+++ b/plesna/storage/metadata_repository/fs_metadata_repository.py
@@ -3,6 +3,7 @@ from datetime import datetime
 import csv
 import json
 
+from plesna.libs.string_tools import StringToolsError, extract_values_from_pattern
 from plesna.storage.metadata_repository.metadata_repository import (
     ExecutionLog,
     MetaDataRepository,
@@ -34,7 +35,15 @@ class FSMetaDataRepository(MetaDataRepository):
 
     def fluxes(self) -> list[str]:
         """List fluxes's ids"""
-        raise NotImplementedError
+        fluxes = []
+        for filepath in self._basepath.iterdir():
+            try:
+                founded = extract_values_from_pattern(self.FILEMODEL["execution"], filepath.name)
+            except StringToolsError:
+                pass
+            else:
+                fluxes.append(founded["flux_id"])
+        return fluxes
 
     def add_flux(self, flux_id: str) -> str:
         """Get the flux metadata"""
diff --git a/tests/storage/test_fs_metadata_repository.py b/tests/storage/test_fs_metadata_repository.py
index c587525..f96f7f3 100644
--- a/tests/storage/test_fs_metadata_repository.py
+++ b/tests/storage/test_fs_metadata_repository.py
@@ -114,3 +114,10 @@ def test_register_and_get_last_log(metadata_repository):
         datetime=datetime(2024, 3, 15, 14, 30),
         output=FluxMetaData(data={"truc": "chose"}),
     )
+
+
+def test_register_and_list_fluxes(metadata_repository):
+    flux_ids = ["my_flux", "flux2", "blahblah"]
+    for f in flux_ids:
+        metadata_repository.add_flux(f)
+    assert metadata_repository.fluxes() == flux_ids