Start with securing the creek/runavay.
Start logging test values,of BOW
(pond/inlett are 2 separate BOW's)
See if there is a nearbye hatchery, that can offer you local's,
down stream your pond.
If there is a specie, beetwen wath's at hand localy, that suits your demands in fishing thrill, that would be the lowest,maitnence (nursing/feeding),with the highest survival potential.
If however, there is non,at not even in the wild around you, the year around climath, might be the reason and then it is a costant up hill battle.
I think there is a sterile cross breed (tiger throut) that fill your demands. If the temp.C/F and DO can suport it,a few but as big you can get, might be your pic.

PS Get your leagel papers/permit in wrighting.

PAUL


PAUL