I got him from Petsmart in Dec. of 2007 . He had a 5 gallon tank with a heater and filter. I did weekley water changes. I fed him pellets and brine shrimp. I noticed his color was turning gray about 2 months ago, he use to be purple all over and his chin was white which was new this month. Yesterday I noticed his water was yellow, almost the color of urine. I then notice there was some sort of net (Bug) dead in his fish tank water. I did a water change last night, and woke up this morning he was gone. In the last month he would spit out his pellets, he did enjoy the brine shrimp. As I was taking him out his tank today, his color was rubbing off on the paper towel, the paper towel was turning purple which is his color if that helps. Also his eyes were cloudy when I was examining him. What could have caused my fish Tony to have passed? Thanks!