32 Pound Salmon

A 32 Pound Salmon is a trophy fish that can be caught while fishing. It does nothing, but can be equipped in the off-hand and shown off.

If you merely wield the trophy fish, it will not show on your character. You have to type 'z' to force the wielded items to display.

Source
This item can be fished in:
 * Alterac Valley
 * Burning Steppes
 * Deadwind Pass
 * Eastern Plaguelands
 * Feralas (Jademir Lake only)
 * Scholomance
 * Silithus
 * Stratholme
 * Western Plaguelands
 * Winterspring
 * Zul'Gurub

Achievements
Catching this fish satisfies the requirements of the One That Didn't Get Away achievement. Only the heaviest trophy fish of each species satisfies the quest requirements. (A few of the rare fish that satisfy this achievement are not this sort of trophy fish.)

The Accomplished Angler achievement, the overall fishing achievement, requires completion of One That Didn't Get Away, so catching the 32 Pound Salmon will apply toward that achievement as well.