catching any triploids ?

visited a N.C. state hatchery last week and was surprised to find they are
now raising triploid brook trout for stocking purposes. see
http://northwesttrout.com/Newsitems/triploid.htm
http://www.eou/~mmustoe?Fishing.html
My questions
although they cannot bred do the triploids know this? will they swim
upstream in the fall and confuse the small native specks who are trying to
raise babies?

as the trips are much bigger do we have to put a * beside their weight when
describing the brook trout we catch?

do we have to carry a dna kit onto stream to know if we have caught a native
Appalachian brookie, a New England strain brookie or a trip fish ?

Next morning walked up my brookie stream and caught just one 7
incher ]native]--rest were hunkered down from the cold-
Joe the Elder