I just found a website where you can replace the little white arrow with a fish! They can also be uploaded on to websites/pages! There are mulitiple types of them, it requires a download, but it is safe. I have a betta one it's blue with a little bit of red on it's fin it follows the mouse, it's really cute! Here is the link to get to it: http://cometzone.cometsystems.com/cats/fish1.asp?LID=272_110