True. I know there’s a blue ish variety. Maybe the golds carry the allalel (sp?).
Ah, I think I might have a good guess. Keith uses my plants too, and although I have mostly golden mystery snails, white glitter foot type, I also keep 3 colors of ramshorn. I have a brown wild type, blue (looks white after they mature), and Leopard.
It's hard to tell a mystery from a ramshorn until they are bigger than a BB so maybe you got a few of my leopard or blue ramshorn with the last batch of plants?
If they are for sure mystery snails, they would be the first of my line to stray from true gold. The common morphs as far as I know them are:
Gold: yellow shell/light foot
Jade: yellow shell/dark foot
Ivory: white/light
Blue: white/dark
Brown:brown/light
Black: Brown/dark
Magenta: purple/light
Purple: purple/dark
My thought is that the dark and the light footed mystery snails are actually different enough genetically (not morphs but infact subspecies) that they don't share a line. I have seen other snail folks breed pure lines of either dark foot, or light foot, with various shell colors, but with no outliers on foot color. I have seen people who introduced mixed tanks and didn't really know who was doing what with who, or which snails bred before purchase that has a mix of foot colors in the tank but anyone's guess on the lineage of the clutch.
RE albinos, although I have seen snails and several commonly available fish marketed as "albino" I don't believe that to be a true gene marker in the case of the mystery snail, just a marketing distinction for one that is of the lighter color of two that are similar otherwise. Gold vs Jade isn't always used in a fish store that might have both available, and allot of shops still market them as golden inca snails regardless of color or line.
There are a few breeding projects (I don't participate) trying to dial in this exact thing, mscgp(mystery snail color genetics project) is the largest scale example I know of, then there are threads around the planted and international forums. But so far I haven't found anything super solid. If you get several off color mysteries, I would be interested to give them a tank and see if they are true morphs, but you would need to separate them very early as they do store genetic packets for release later in life.