diff --git a/docs/visualize-3d-fish-tracks.ipynb b/docs/visualize-3d-fish-tracks.ipynb
index c1cdbeb..6d76978 100644
--- a/docs/visualize-3d-fish-tracks.ipynb
+++ b/docs/visualize-3d-fish-tracks.ipynb
@@ -726,7 +726,7 @@
     }
    ],
    "source": [
-    "#import xarray as xr\n",
+    "# import xarray as xr\n",
     "\n",
     "store = s3fs.S3Map(\n",
     "    root=\"s3://destine-gfts-data-lake/demo/A19124/three_d_pdf.zarr\",\n",