Joking aside, I think your yellow catfish is a cousin to our appaloosa catfish here in Louisiana. It’s a great tasting fish, as they are predators - not scavengers.
I've never had problems with yellow cats flavor here.
Blue cats can sometimes taste a little.... muddy, or something.
But the big yellows. Pure meat. I put the head in my kitchen sink to take out the cheeks, and it filled the sink, side to side, front to back, and stuck out over the top.
Needless to say the cheek steaks were as big as a filet mignon.
/johnny