Isn’t gold fish a type of carp? Edible, I assume, but not the most desirable.
Carp is Christmas dinner in Poland. My first Christmas with my Polish wife (now deceased) was in 1999 in Poland. They made me pan fried trout because they didn’t think I’d eat the carp in aspic. I ate both. Unlike many Americans these days, I’m fine with aspic. It’s funny looking at old cookbooks from the 1950s, they did a lot of ‘fancy’ dishes in aspic that most people today wouldn’t touch.
Just take your giant goldfish and put it in the tub for a few days feeding it something other than mud until it doesn’t taste like mud anymore, and then cook and eat it. That’s what they do in Poland. No shit, there was a carp in the tub when I arrived at her parents house.