Sorry for the the bad image quality, my camra's auto focus is really crappy in macro mode. I got 2 letuce Nudibranchs from reeftopia, but they were almost black in color. I've read that their color changes depending on the diet. Anyway, I still see one of the two original ones and he is still large (1-1.5") this other one in the photo is ony 1/4". Do you think only one of the two original ones shrunk and the other didn't ?