Fins inheritance, something is wrong there?

For decades, we assume that fins are dominantly inherited with Xiphophoriden. Since HiFin swordtail, repeatedly occur swordtail with normal fins, it was assumed that there is a lethal factor in "homozygous" HiFin swordtails. This conclusion is later took over for the Lyraschwertträger.
Since the 60s, there is the presumption that the "homozygous" Lyraflosser is a fan-finned fishes.
Glenn Tekeshita has undergone in vitro fertilization. That's what I can prove with the help of the king-lyra. But here too, the ratios of certain forms fins not in accordance with the old theory.

There is an approach that could explain the whole thing: Co-dominance.

So far we have assumed that the simple fins are "covered" by the HiFin / Lyra.
No, the normal fins are inherited equally, so my thesis. Therefore, animals are always or usually normalflossige occur.
This has yet to be examined in detail.
So far I have not yet been taken it exactly.
A veiltail (homozygous Lyra)paired with anormal finnedmalesshould produce"normal"Lyra-swordtail the oldruleonly(heterozygous).Inco-dominant inheritancenormal finnedswordtailmay also occur inthis mating.
If so,the co-dominanceis proved.

Who will do it?