This is a video of one of my pearl danios that swam/jumped into it's filter. The filter is an AC70. It's not clear on the video but it actually swam back up the waterfall the first time I was trying to push it out. This is not the first time my pearls have done this. I haven't had this trouble with zebra or leopard danios.
http://www.youtube.com/watch?v=aSexxEwbct4
http://www.youtube.com/watch?v=aSexxEwbct4