Ok so I have 3 cleaner shrimp in my 75g. One of the three is a little larger and has a thicker tail. I know from living on a lake when I was younger and catching crawfish that they carried the babies under their tails. Do shrimp do the same or has anyone ever had shrimp breed in their aquarium? I will have to go find my surefire and take a closer look. Sorry I can't take pics since my camera is out of service at the moment.