Madog has asked you to demonstrate your skills at fishing.
'Another amateur angler come to help us shore up our food supplies for the winter. Well met, I'm Madog and this fella to my side is Teilo. We're in charge of filling up those racks of drying fish you passed by. If you want to help us, catch three small fish off the dock here. You have to do it on the dock here where we can watch your technique, ok?
'If you need to learn the basics, talk to this self professed 'Hobby Master' next to me. He'll teach you the basics and set you up with a basic fishing rod.'
Madog asked you to catch a fish while standing near the Hobby Master in Lhan Garan.
Catch a fish.