Blue Leo Ramshorn snail color issue :(
I've had a thriving colony of Blue Leopard Ramshorn snails for...about a year or so now. They were so cute when the original 7 came in! I could clearly see their blue spots on their shells, and their bodies were a purple-brownish color. Fast forward to today, my rams are now more of a dark pinkish color body and the spots are barely visible :( I can still see them if I look hard enough though, so the genes for blue leo are definitely still there. They never get terribly big, they only grow maximum to the size of a large pea, and they basically only eat algae and dead plant matter. They must not be lacking of food though, because I have a new round of babies at least every month now.
The weird thing is, some of my blue leos have hitchhiked into my sister's tank through plant-swapping, and hers are so obviously blue spotted rams! Gorgeous color, they really stick out among her pink rams. Could this be a lighting thing? Food maybe? She has a bunch of platys in her 20 gallon, so she overfeeds a lot, and has mutant-huge pink rams. She also has an LED aquarium light while I have a 6500k daylight bulb.
I've been extremely diligent in making sure no pink rams/hitchhiker rams get into my tank, I vigorously check new plants to be sure there's no egg pods or teeny-tiny ram babies on them before I put them in my tank, and I do check my snail population from time-to-time to make sure I dont spot any hide-aways or odd colors. Any tips from someone who's had rams for a good amount of time? What gives you the best color?
Thanks so much guys!
Male Rosetail: Smokey