That snake is a normal, possibly from upper keys lines. Normals can and do have reduced side pattern and belly checks, without being carriers of the diffuse gene.
There is a distinct tendency for people to imagine higher end morphs in snakes that are otherwise normal but are far towards one end of the normal spectrum. I'd bet you money that if you bred that snake to a bloodred you wouldn't get a single homozygous blood out of it.
Reduced side patterns and belly checks are really and truely only an indicator of 'het for bloodred/diffused' if there's reason to suspect bloodred heritage in the line. The reason that last caveat is there is because there ARE normals that can mimic the 'het bloodred' look... just like there are normals that can fake being hypo or caramel, and hypos and ghosts that can be mistaken for ultramels and ultramel anerys. As much as we like to think that you can look at a snake and say XX is het for YY just by looking, we really can't. If we have an inkling of its history, we can possibly make an educated guess, but with no background information, any assumptions we make are bound to be faulty.
-Kat
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