"Transforms the imbiber into a small koi fish for a period of time. Very useful for sneaking up on enemies, or simply jumping about in the water." -In-game description
Essense of Fish Potion is a type of potion found in Mini Ninjas. This potion is used to turn the player into a koifish. It is made using Horse Tails and Sacred Lotus. When used on land, you will turn into a koi fish and flop in a very immobile fashion until you can reach water. When swimming in water the player moves slightly slower than when using a hat and is hidden as if they are hidden in tall grass. It is also possible to jump in the water while in this form. The recipe is first found in Ch 6 (DIstress Signal) and costs 45 coin.