I have had this feature for awhile now and I don't think I have seen anyone else mention it.
Who else is seeing Tiffi fishing for an extra life?
You receive an extra life once a day when you first run out of your standard five lives.
I suppose anything that provides an extra life is a good thing, but as ever with King's features it comes complete with annoying pop-ups.
Why would I lose a life after winning a level?