diff --git a/doc_src/python_docs_theme/layout.html b/doc_src/python_docs_theme/layout.html
index e5374a96d..ed6d7ed97 100644
--- a/doc_src/python_docs_theme/layout.html
+++ b/doc_src/python_docs_theme/layout.html
@@ -2,7 +2,7 @@
 
 {% block rootrellink %}
     <li><img src="{{ pathto('_static/' + theme_root_icon, 1) }}" alt=""
-             style="vertical-align: middle; margin-top: -1px"/></li>
+             style="max-width: 80px; vertical-align: middle; margin-top: -1px"/></li>
     <li><a href="{{theme_root_url}}">{{theme_root_name}}</a>{{ reldelim1 }}</li>
     {% if theme_root_include_title %}
     <a href="{{ pathto('index') }}">{{ shorttitle }}</a>{{ reldelim1 }}
diff --git a/doc_src/python_docs_theme/static/fish.png b/doc_src/python_docs_theme/static/fish.png
index 41ba714e7..eb6164efa 100644
Binary files a/doc_src/python_docs_theme/static/fish.png and b/doc_src/python_docs_theme/static/fish.png differ