Level 15 Treasure dragons?

[Mythdefied]

You can level the Treasure dragons to 15, but does doing so get more gold out of them? There's no point in wasting the food if they still only produce 5 gold a day. Anyone know?

[Kennedward]

They still produce 5 gold per day

[Mythdefied]

Ah. No point to it, then. Thanks.