Is there a Fish-Fish no mi?


Is there any Zoan Akuma No Mi that gives the user the ability to transform in
fish (Fish-Fish No Mi)? If so can the user swim in the sea?

@Edit: I don't read the manga, so I don't know if anything like this has
already happened or not




We have not yet seen a Fish Devil Fruit user. They will not be able to swim
underwater due to the Devil Fruit curse, but they will be able to breath
underwater due to the Fish's abilities.

Seeing as there has not been a Fish Fruit user thusfar, this statement is
speculated on the very similar case that we have seen, where a fishman had
eaten a devil fruit. [Vander Decken
IX](http://onepiece.wikia.com/wiki/Vander_Decken_IX#Devil_Fruit), a Japanese
bullhead shark fishman, ate the Mark Fruit. In chapter 615, Vander Decken IX
explains that [due to the Devil Fruit Curse, he is rendered unable to
swim](https://i.stack.imgur.com/YLfGr.png). We can later see him in chapter
631, where he has [put an air-bubble around himself to retain his
energy](https://i.stack.imgur.com/ktMm6.jpg) and not to make him able to
breathe. This last part is confirmed at the end of the arc, because even after
the air bubble had been removed from Noah, Vander Decken IX did not suffocate
and was seen alive, being arrested, instead of buried.




We have not yet seen a Fish Devil Fruit user. They will not be able to swim
underwater due to the Devil Fruit curse, but they will be able to breath
underwater due to the Fish's abilities.

Seeing as there has not been a Fish Fruit user thusfar, this statement is
speculated on the very similar case that we have seen, where a fishman had
eaten a devil fruit. [Vander Decken
IX](http://onepiece.wikia.com/wiki/Vander_Decken_IX#Devil_Fruit), a Japanese
bullhead shark fishman, ate the Mark Fruit. In chapter 615, Vander Decken IX
explains that [due to the Devil Fruit Curse, he is rendered unable to
swim](https://i.stack.imgur.com/YLfGr.png). We can later see him in chapter
631, where he has [put an air-bubble around himself to retain his
energy](https://i.stack.imgur.com/ktMm6.jpg) and not to make him able to
breathe. This last part is confirmed at the end of the arc, because even after
the air bubble had been removed from Noah, Vander Decken IX did not suffocate
and was seen alive, being arrested, instead of buried.

