Well, I had a lettuce nudibranch in my tank about 3 months ago. After a week, I never saw him again or the remains of him but he was about 2 inches in size. Today I came home to something on the glass that resembles a very tiny lettuce nudibranch, about a quarter size of a penny in length. I tried getting a picture but it comes up way too blurry. If anyone knows how to use a canon sd800 to get up close, let me know and I'll try again to post a pic. Anyway, is it possible one lettuce nudbranch left some offspring before his demise?