King Salmon can be found in the park's pond or in the grocery store. It only takes one hit to kill a zombie with these and it has a very quick attack, but the King Salmon "breaks" after two hits. If anything they are a gag weapon, but can be devestating in the hands of a survivor since their items never break. Interesting enough, the object has very odd physical properties, allowing it to bounce off of the ground or off of walls at great speed.
Both the fish in the pond and the fish in Seon's seem to be frozen, as Frank picks up a fish and it is not moving, though it moves in the pond. It is untested whether or not one can put the fish back.