fish stuck to filter

Hello, I just finished cycling my 36 gal bowfront tank that’s using a Fluval 70 filter. I chose this filter after seeing lots of people mention that the Fluval 50 wouldn’t be powerful enough for my tank size. Right now, I have a few Zebra Danios that I just moved into the new tank and within the...

so this morning i turn on the tank lights and my pictus cat (about 2 inches id guess) was STUCK to the filter and not in a "im dying" way in a thrashing and trying to swim off of it way looking around frantic with those big pictus cat eyeballs SO i push him off gently with the net an he swims...