There is a way to get into Fado's house people. When you go to the fishing pond and catch 30 Catfish, the girl at the fish pond will tell you that there once was a guy from Ordona who caught 29 catfish. She rambles about how the person is waiting for the one to break his record and gives you a Wooden Key. Go to Fado's House in Ordona and the door will open using the Wooden Key!
Fado waits inside for you and gives you the Loach Lure. THE lure to catch the legendary Hylian Loach!
After catching the Hylian loach, the girl from the pond will give you free acces to the pond.
Sadly there was already the Frog and Fishing lure to catch the Hylian Loach...
But there is
something else to be gained though. I bet everyone by now has noticed that you can C-look at various objects in Hena's hut, and that she can also give comment when you look at the pics of her or her sisters? Well, if you agree to take Hena along with you for fishing (byebye 100 rupees) and you look at her with C, she'll ask if you want to maybe reel HER in - "What, wouldn't I
make a good catch?" I answered 'no' to see her reaction, it was quite lame - you basically got kicked out of the fishing game. But if you answer 'yes' she will give you an upgraded FISHING HOOK!!! And no, not another lure, but an actual hook like the Coral Earring, which act similarly to the Sinking Lure. Now you can Bobber Fish everywhere with the best results!!!