diff --git a/binaries/data/mods/public/simulation/templates/template_unit_fauna_fish.xml b/binaries/data/mods/public/simulation/templates/template_unit_fauna_fish.xml
index 41c9c42ddb..995306a6d2 100644
--- a/binaries/data/mods/public/simulation/templates/template_unit_fauna_fish.xml
+++ b/binaries/data/mods/public/simulation/templates/template_unit_fauna_fish.xml
@@ -13,6 +13,7 @@
   <Obstruction>
     <BlockMovement>false</BlockMovement>
     <BlockPathfinding>false</BlockPathfinding>
+    <DeleteUponConstruction>true</DeleteUponConstruction>
   </Obstruction>
   <Position>
     <Altitude>-2.0</Altitude>