goldfish?

[FrenchCarper]

Lets say some found a pond of big goldfish(not koi i no the differnece), but the mnr want pictures. How would one go about catching one. I've been researching for awhile on what they eat and ether get the "it a carp" or just use worms. The pond is infested with bluegill(fun on the fly) so worms are out of the question. And goldfish seem to have tiny mouths so a traditional hair rig is out of the question. Any one have a idea on what they eat?