Rainbow trout are a subspecies of salmon. Native to cald water systems in North America and Asia. Some live in salt water but are called steelheads because they get more greyish
They like water clear and cold. Usually found in shallow streams. They can also be found in lakes and reservoirs but will be deeper.
The average size is about a foot long in streams. Though they CAN get a lot larger. The record is 50 lbs. Huge!
They live on a diet of aquatic insect larvae, insects, and smaller fishes.
Use a fly to match what they're feeding on
In summer fish deeper water/winter shallows
They also have excellent smell/ use salmon eggs
Cast upstream/ They ambush things floating DOWN river and won't see you
Murky waters use bright flies/clear use dull