I have just been told by my friends that the pause button as been added in the options for Fish Tycoon 2, on their phone,but it is not there on my iPad is it just the phone got it and if so will iPad be getting it at all.

What sort of operating system does your friend's phone use? If it's Android, that might explain it, as releases for Android and iOS follow different schedules.

If you recall, the game was released for Android some time before us iOS users got it.