I know I just posted and I apologize for another post, but this issue seems more urgent/strange that the other.
Symptom: Finneus will be a bit bloated and will then start to daze off and stare off into space. He'll then clamp his side fins to his body and "worm" his way through the water. Rather than using his fins to propel himself, he'll start to move his entire body instead to swim. He'll then grow very still and will start to float. I've seen him float completely upside down and then right back up, and he's also floated to the bottom of the tank. A few seconds later, he'll snap out of it, then swim around normally, the bloat in his stomach gone.
I have no idea what is causing this, and I can't find any related symptoms online.