Tigers are no different than most any type of fish you can stock for the particular enjoyment of your pond.
People who want fast growing BG might stock condello strain BG which have been selectivly bred to give them that result.
If your a lousy fisherman like me Tigers are an excellent way to raise and enjoy catching trout, and they also exist naturally in the wild.
I like catching the brookies in the pond, but the tigers are caught much more frequently.