Ok, but if its a homogenous hybrid, That would take a few generation. With the other fishes, non yellow labs, colors coming out in some.
A local "central Iowa" cultivated variant of the native F0. If they have hybrid genes, its from a distant cousin.
The local white bass crossed with an ocean going 60 pound striped bass, makes a sterlie, hybrid wiper bass.
Like a mule is to a donkery and a horse.
I am sure my fish are many generations, from lake malawi. Even though, would 10 native F0, line bred and inbred isolate the genes so much that, the 20th cousins would be distinctly different?
Enouph to call it a hybrid, when its a full blood, just with homogenous traits.
Kind of like a AKA Border Collie, bred for looks, vs a ABC Border Collie, Bred to move live stock. Both are DNA, 100% pure breed Border collie. Very different in how they behave, and look.