We got Emma a beta fish a few weeks ago that she named "Colors." It is dark blue and has a little bit of red on it's fins. We got some pretty marbles for his bowl yesterday and Emma put them in the bowl, two at a time. When we put Colors back in his bowl, Emma cried and said "no" a lot. I think she was upset because the fish blends in with the marbles and she can't see him as well anymore. I think the fish welcomes the opportunity to hide from Emma.