Title basically says it, I've managed to catch 16 Legend II in three days :P I'm not sure if it's a bug or not but IMHO its a bit OP since it's 200K gold in 3 days up to every week (If you're lucky to have the quest)
I don't think it's a bug that you can catch more than one of those. While that is a lot of gold, by the time you've made it to the Island there's a good chance you're making quite a bit of money already. But there could probably be some rebalancing here.
