FitTV is part of the Discovery Networks since 2003. Dish has never carried this channel dating back to when the called "The Health Network". This channel was owned by Fox. Originally, this channel was called Cable Health Club.
Dish Network added "Veria" on its lineup last month. It has certain element of Fit TV. With this move, I don't think we would see FitTV on Dish any time soon.
E* carries most of the digital Discovery networks. There are still a few channels that E* does not carry. D* does not carry all the Discovery networks. I assume that operators have the option to choose channels from the line-up.
Dish Network added "Veria" on its lineup last month. It has certain element of Fit TV. With this move, I don't think we would see FitTV on Dish any time soon.