CC, I didn't really answer your question about crossing back.. Yes, they sure can-if conditions are such that reproduction, hatch and recruitment can exist.
Now that we have confirmation of Triploid Saugeye reproducing, Triploids will no longer be produced. Kansas also does not stock SAE where WAE reproduce successfully anyway, so it would not be advised.
Were the Triploid Saugeye individually blood tested to prove they were all Triploids? If not, some could have been diploids and could have been responsible for the reproduction. Here in Indiana, ALL Triploid Grass Carp have to be individually tested, then 10% of that "lot" are re-checked by USF&W people before a triploid certificate will be issued for that lot of fish.
