BillD
Aquarium Advice Addict
You make too many assumptions based on not dealing with facts. The evolution of fish is being studied intensively by more than a few people. Taxonomy is, in fact constantly changing, when new evidence comes to the fore. Regardless, hybrids are not two fish of the same species. So, whether fish evolved from one common ancestor, or several, the fact is now, that there are numerous genera and species. In most cases they can not be hybridized outside of a lab. Dogs and humans are not hybrids, with all examples of each, being of the same species. Bloodlines, do not a species make, nor do two different bloodlines make a hybrid.
As well, with all the study of humans, and the advances in the understanding of DNA, since the naming of humans as Homo sapiens, there is still only one species.
As well, with all the study of humans, and the advances in the understanding of DNA, since the naming of humans as Homo sapiens, there is still only one species.