Byron Amazonas
AC Members
Do I think that this represents a population that is evolving towards speciation. Absolutely, is it there yet - NO!! They are way too easy to hybridize and produce fertile offspring.
I don't understand your concept that being able to hybridize means the species are not distinct species. That makes no sense to me when one looks at the livebearers in general.
As for the Endler being a distinct species, the majority of ichthyologists now agree it is.