Mac the Fish is still on his lonesome, although his tail has almost completely grown back now. However I don't think the top of his tail will ever completely grow back.
Anyway I thought as you had been tuning in throughout this saga you might like to actually see the survivor of The Terrifying Fish Tank 2010.
So without further ado may I present...MAC!
My mum wants to get some more fish however she has said if and when she does they will be put in quarantine for a while before they go in to the tank with Mac - I don't think he could stand a repeat performance!