Free images results:

Trout pictures, stock photos and images


I'm hooked! Stock Photography
Author: Crp
Hooked! Royalty Free Stock Image
Author: Crp
Bobber Royalty Free Stock Photos
Author: Rbouwman

Also, here are some commercial RF-licensed images that match your search criteria:  
Trout farm Stock Photos
Author: Knorre
Trout fish Royalty Free Stock Photography
Author: Andart