So it your contention that a aneuploid would not be infertile but a polyploid would? It is pretty commonly accepted that uneven numbers of chromosomes are more likely lead to infertility than even ones.

Here is an article that describes a triploid hybrid from two diploid species of fish. Not only that but they can reproduce asexually as well as sexually. That sounds far from infertile to me.
https://www.google.com/url?sa=t&sour...9N_h6h04dTjpPA