This more aggressive of the trout species has become an anglers adversary, due to it's ability to adapt and learn how to survive in the most fished waters.
(This more aggressive of the trout species; has become; an anglers adversary) (it; 's; ability to adapt and learn how to survive in the most fished waters)
This more aggressive of the trout species it
has become 's
an anglers adversary
ability to adapt and learn how to survive in the most fished waters