added 4 new fish and trophy (carp, perch, catfish, exoticfish)

fish, carp, perch, catfish and pike only catched in rivers
clownfish, bluewhite,exoticfish and shark only catched in sea
convert sound stereo in mono

poles.lua

@@ -82,6 +82,12 @@ for _,pole in pairs(fishing_setting.poles) do
 				local ent = minetest.add_entity({interval = 1,x=new_pos.x, y=new_pos.y, z=new_pos.z}, fishing_setting.baits[bait].bobber)
 				if not ent then return nil end
 				local luaentity = ent:get_luaentity()
+				local node = minetest.get_node_or_nil(pt.under)
+				if node and node.name == "default:river_water_source" then
+					luaentity.water_type = "rivers"
+				else
+					luaentity.water_type = "sea"
+				end				
 				luaentity.owner = player_name
 				luaentity.bait = bait
 				luaentity.old_pos = new_pos