Here's the pic again... IIRC this is one of each..

ewest, northerns weren't from Bruce.. we're still working on that.. just random bg's that are my original stockers.. and my f1 and f2 were growing faster.. and I have pure northerns, 'hybrids', and pure cnbg...

And I have no dog in this hunt saying the northerns grew faster/bigger.. I NEVER thought they would since I read all the articles and was giddy to get my hands on CNBG.. I almost didn't put them in; but I just wanted the diversity.

Accidentally, I have fish that look like the below pic.