diff --git a/mods/ENTITIES/mobs_mc/cod.lua b/mods/ENTITIES/mobs_mc/cod.lua
index 9e8b62269a..656b2c14c4 100644
--- a/mods/ENTITIES/mobs_mc/cod.lua
+++ b/mods/ENTITIES/mobs_mc/cod.lua
@@ -31,7 +31,7 @@ local S = minetest.get_translator(minetest.get_current_modname())
 
 local cod = {
 	type = "animal",
-	spawn_class = "water",
+	spawn_class = "water_ambient",
 	can_despawn = true,
 	passive = true,
 	hp_min = 3,
diff --git a/mods/ENTITIES/mobs_mc/salmon.lua b/mods/ENTITIES/mobs_mc/salmon.lua
index 19c935389b..f8e0c4e027 100644
--- a/mods/ENTITIES/mobs_mc/salmon.lua
+++ b/mods/ENTITIES/mobs_mc/salmon.lua
@@ -11,7 +11,7 @@ local S = minetest.get_translator(minetest.get_current_modname())
 
 local salmon = {
 	type = "animal",
-	spawn_class = "water",
+	spawn_class = "water_ambient",
 	can_despawn = true,
 	passive = true,
 	hp_min = 3,
diff --git a/mods/ENTITIES/mobs_mc/tropical_fish.lua b/mods/ENTITIES/mobs_mc/tropical_fish.lua
index 702c692b8c..79b32bb8ba 100644
--- a/mods/ENTITIES/mobs_mc/tropical_fish.lua
+++ b/mods/ENTITIES/mobs_mc/tropical_fish.lua
@@ -59,7 +59,7 @@ end
 
 local tropical_fish = {
 	type = "animal",
-	spawn_class = "water",
+	spawn_class = "water_ambient",
 	can_despawn = true,
 	passive = true,
 	hp_min = 3,