Fix flying salmon (extra_mobs)

mods/ENTITIES/extra_mobs/salmon.lua

@@ -19,6 +19,8 @@ local salmon = {
     xp_min = 1,
     xp_max = 3,
     armor = 100,
+    rotate = 270,
+    tilt_swim = true,
     collisionbox = {-0.4, 0.0, -0.4, 0.4, 0.79, 0.4},
     visual = "mesh",
     mesh = "extra_mobs_salmon.b3d",
@@ -47,8 +49,7 @@ local salmon = {
 	},
     visual_size = {x=3, y=3},
     makes_footstep_sound = false,
-    fly = true,
-    fly_in = { mobs_mc.items.water_source, mobs_mc.items.river_water_source },
+    swim = true,
     breathes_in_water = true,
     jump = false,
     view_range = 16,