The Fish Repellent is an enemy repellent that, when consumed, provides the player the Fish Repellent buff, which causes most aquatic, or 'fish', enemies to become passive, not dealing damage to nor pursuing the player. As with all repellents, it is provided by the Confused Zombie every half day for 1 .
The buff lasts for ten minutes and, like all buffs, can be canceled at any time by right-clicking the icon. It will also be automatically canceled should the player consume a different repellent.
It can be very useful when exploring the Aquatic Depths, as most of the enemies there won't target you.