Fish (mob)

Fish are a planned passive mob. In the Halloween update, Notch said he would add fish. However, he had limited time, and was thus only able to add them as an item. While there may be a coding for the fish in the game itself, there is not a model that currently exists. Some players, however, are convinced that fish will never come as a mob. This reasoning was created by the fact that "fish have been 'planned' for more than a year, yet there still isn't a model".

Notch states in the reference the 'ability to catch fish' which is already implemented. Nothing says anything about adding a model.