I cant remember, what kind of shrimp eats aptasia? I found like 12 of them today when I re arranged my rock work. Also, I have a cleaner shrimp and a fire shrimp already in my 75, do shrimp croud each other out? When my fire shrimp and my cleaner shrimp get real close to each other they kinda chase the other away. I dont want to croud them by adding a 3rd.