r95rdstr said:I agree with this method I also believe that beheading the fish (If you can do it without cutting your finger off) is probably the quickest.
I can't speak for fish, but a severed human head can stay alive and conscious for several seconds. A human can also survive for several minutes in freezing water.
As for the To kill a fish thread, Euthanasia is somethimes necessary to end the fishes suffering in a hopeless case, whether you choose to put the fish down and how is a personal decision, but if you choose to do it, I think a discussion on the fastest, most humane way to do it is beneficial and appropriate.