fish?

*you are in a pet store expecting just normal little fishes you check and there was an obese fish, you really liked it this fish (could be a lie) so you bought it. at home you went to bed until the fish started talking* "Hello thing, I am obese fish, I will give you all your wishes if you feed me" *you stare in shock, you look up and down to see if it was a joke but he didn't lie..(or did) you gave him a snack, he then smiles* "you got 13 wishes, for each snack, double snack, double wishes."