On my Windows version I don't get a comfimation to delete. Hit delete by accident, and it's gone.

I lost my first winning game by accident that way. One wrong click and all that work down the tube.

Now I DO backup my whole Fish Tycoon folder regularly. It backs up more than I need, but it's quick and easy! -- and you can even run the older files if you open the Fish Tycoon in the folder!

....... It's a great way to keep old loved games and fishies, too!