QA your HBG could be F1...or could be any generation. I have had issues historically sourcing "pure" F1 HBG. I suspect the continued inbreeding and successive generations the inbreeding depression characteristics become more prevalent. While I don't lose sleep over my hybrid F2, F3 etc. despite the abnormalities in my fisheries, it's still pretty interesting to witness the "mutations".

Many men go fishing all of their lives without knowing that it is not fish they are after. ~ Henry David Thoreau

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