This my be a few years ago but I had a goldfish (I know I'm not the only one) people think they only like a few years but mine didn't it lived 14 years... He was a pet I kinda grew up with I was only 7 I think when he died... I tried getting other goldfish but they sadly didn't live as long... I found out fan tails and lion heads are disables so that's the reason why yoshi and luigi died so quick... Yes I named them. I think people don't care enough about a goldfish as people think they don't live long and have short memories well they are myths. My goldfish live to be 14 that's how I am now!
If people took the time they could train goldfish to do tricks, somewhat like a dog... But nobody cares...
Proof-
link
Or just look up goldfish tricks on YouTube