Whats the best way to get rid of fish?

i need to get rid of 2 carp 2 golden orfe and 2 goldfish and 3 minnows from my pond, as my wife is complaining about the filtration system that i just bought and built, is running through the side of the garden. so how do i get rid of them? is there anyway i can sell my filtration system? preferably for at least half the price cos it cost loads.