diff --git a/src/_pytest/fixtures.py b/src/_pytest/fixtures.py
index 7656fca2f5b..6f5d7082311 100644
--- a/src/_pytest/fixtures.py
+++ b/src/_pytest/fixtures.py
@@ -2512,12 +2512,7 @@ def _showfixtures_main(config: Config, session: Session) -> None:
 
     fm = session._fixturemanager
     available = []
-    seen: set[tuple[str, str]] = set()
     for fixturedef in fm._get_all_fixture_defs():
-        loc = getlocation(fixturedef.func, invocation_dir)
-        if (fixturedef.argname, loc) in seen:
-            continue
-        seen.add((fixturedef.argname, loc))
         available.append(
             (
                 len(fixturedef.baseid),