You do not have a killing machine haha. In my experience, a stuck fish is not a healthy fish. A strong, healthy fish should have no problems swimming out of the intake flow for the power head. I've got the exact same power head that runs during lights on, had it for a year and a half. Once in a great while, I'll have a white cloud that'll get stuck. They always have an underlying issue.
My oto's frequently hang on to it though. It grows a nice layer of green algae that they love to chow on. They have no issues sitting directly on the intake and then swimming away though.