I don't know specifically what happens after the F1's, but my gut (no research there) tells me mothor nature provides preference to maintaining specific species. If that were not so, in mixed fish BOW's everything that could cross would eventually blend into a big mongrel mess.
So I think for numerous reasons, hybrids simply do not have the fecundity of pure lines of fish. They are the exception in nature rather than the rule (as opposed to man made crosses by special circumstances).
Last edited by snrub; 02/06/18 12:32 PM.
