I believe they are 2 names 1 fish..
But if they are different then the silk would be blue, and the titanium might carry fader gene to a percentage washing off more or less of the blue leaving the fish light blue. That's why faded red texas have white pearls, and normals have blue pearls.
IDK. I did not create them and their names..
[video=youtube;WzTiawA9LM8]http://www.youtube.com/watch?v=WzTiawA9LM8&list=FL8gpFHf4dvyTCXuBn98NGMw&index=74[/video]