Remove FishData

src/main/java/ch/njol/skript/entity/SimpleEntityData.java

@@ -336,6 +336,7 @@ private static void addSuperEntity(String codeName, Class<? extends Entity> enti
 		addSuperEntity("mob", Mob.class);
 		addSuperEntity("creature", Creature.class);
 		addSuperEntity("animal", Animals.class);
+		addSuperEntity("fish", Fish.class);
 		addSuperEntity("golem", Golem.class);
 		addSuperEntity("projectile", Projectile.class);
 		addSuperEntity("living entity", LivingEntity.class);

src/test/skript/tests/regressions/6707-spawn-fish-types.sk

@@ -0,0 +1,26 @@
+test "spawn fish types":
+	spawn a cod at spawn of world "world":
+		set {_e} to entity
+	assert {_e} is a cod with "failed to spawn a cod"
+	delete entity within {_e}
+
+	spawn a salmon at spawn of world "world":
+		set {_e} to entity
+	assert {_e} is a salmon with "failed to spawn a salmon"
+	delete entity within {_e}
+
+	spawn a puffer fish at spawn of world "world":
+		set {_e} to entity
+	assert {_e} is a puffer fish with "failed to spawn a puffer fish"
+	delete entity within {_e}
+
+	spawn a tropical fish at spawn of world "world":
+		set {_e} to entity
+	assert {_e} is a tropical fish with "failed to spawn a tropical fish"
+	delete entity within {_e}
+
+	parse if running minecraft "1.19":
+		spawn a tadpole at spawn of world "world":
+			set {_e} to entity
+		assert {_e} is a tadpole with "failed to spawn a tadpole"
+		delete entity within {_e}