diff --git a/app/services/seed_service.rb b/app/services/seed_service.rb
index fdefc82..63809fa 100644
--- a/app/services/seed_service.rb
+++ b/app/services/seed_service.rb
@@ -9,7 +9,6 @@ def self.seed
     Fish.delete_all
     Course.delete_all
     Course::Link.delete_all
-    Fish.delete_all
     TeamMembership.delete_all
     Team.delete_all
     Comment.delete_all
diff --git a/db/migrate/20220729223019_add_user_id_to_fish.rb b/db/migrate/20220729223019_add_user_id_to_fish.rb
new file mode 100644
index 0000000..815202d
--- /dev/null
+++ b/db/migrate/20220729223019_add_user_id_to_fish.rb
@@ -0,0 +1,5 @@
+class AddUserIdToFish < ActiveRecord::Migration[6.0]
+  def change
+    add_reference :fish, :user, null: true, foreign_key: true
+  end
+end