TouchFish intergrates with Twitch
TouchFish is the first iOS game to have Twitch broadcasting functionality at launch. In the game, you raise a virtual BuddyFish and build out a physics-based world for it — all in movie-quality, real-time 3D graphics. Your BuddyFish can learn new tricks (through mini games), read your emotions, and even show your reflection in its eyes.
— source Twitch Blog
Check out the video below which explains how Twitch is integrated into TouchFish.