I recently moved my male betta fish from a 1 gallon fishbowl to a 10 gallon aquarium. When I added a filter earlier today, the betta fish seemed quite annoyed at the current, but also seemed to hang out around the filter. The betta briefly got stuck on the intake holes of the of the filter. Fortunately, I don't think it suffered permanent damage. I am, or rather, was, using a Tetra Whisper 10i filter.
Is there a way to stop the betta from getting stuck in the filter, and does this happen with other fish species or floating plants?