You need to habituate them !!!! Look at threads on habituation.

https://forums.pondboss.com/ubbthre...st&topic=0&Search=true#Post22246

Habituation of newly stocked fish

Study- new stocker survival in existing pond - Pond Boss Forum

https://forums.pondboss.com/ubbthre...uation+ewest&topic=0&Search=true

Stocking of Fingerlings - Pond Boss Forum

https://forums.pondboss.com/ubbthre...st&topic=0&Search=true#Post26019

Adding fingerling bass to existing lake - Pond Boss Forum

https://forums.pondboss.com/ubbthreads.php?ubb=showflat&Number=169568#Post169568