it is not inbreeding, it is line breed to keep that blood line from crossing out.
Line breeding is still inbreeding, it's just done with more care, choosing the healthiest, more vigorous fry to hold back for breeding. If you dont allow the line to "cross out" that means you are pairing related fish. No matter how carefully it is done, if you dont introduce new blood after so many generations they will decrease in size, fertility and overall health.
the sb tex is breaded with a parrot to get their sb. so 9 out of 10 males are not fertile
Only if the percentage of parrot blood is something like 75%(?...not sure exactly but something like that) or higher. Any normal (normal= pure wild type) bred to an sb should (theoretically) produce fertile male offspring.
All the stuff we're talking about here is why I went the route I did Chris. With my line of sb texas I'll never have this problem, they're something like 75% GT. I will possibly tinker with them a bit more, my fh and the texas parrots would be cool to incorporate into the mix. Titus my sb FH crossed to a pure escondido, the resulting fry could then be crossed to my recent batch of Green Texas X sb Green Texas fry. Still not sure about that yet.
Soon nothing in my tanks will be less than 50% GT, and thats a low estimate. The fry I'm starting with are already more than 50% GT, the father was pure GT, the mother had to have at least 25% GT, I'm guessin more like 50% by the look of her. I think ultimately selective breeding and occasional crossing back to pure GT will produce the look
and the genetics I'm after.
Soon nothing in my tanks will be less than 50% GT...
Which is total crap cuz of course I have Titus, the texas parrot females which are mostly parrot, my pink flower jellybean project, my delhezi bichir Crunch, the as yet unamed senegal bichir.....