I'm not sure if y'all will be able to identify what's in my tank without a picture, but I'll try my best. I just noticed something on one of my rocks that looks like a small stomatella, but it doesn't move. It's pink/red in color, about 1/2" long. The reason I say it looks like a stomatella is because the main portion of it looks to be an oval shaped disc, shell, whatever, with a membrane of sorts holding it to the rock. I checked out Marc's ID page and couldn't find it. Any ideas?