I had fresh water aquariums when my girls were young, enjoyed the hell outta them. I wasn't good at keeping the fish alive - LOL - but I kept the local pets stores in business.
this is rope fish try a small tank.... like 40 gallons... they're sold everywhere across Kijiji and garage sales. unless you think you're too old to learn something about fresh water... pffff
One of these days, I'm gonna get a good picture of my upside-down catfish. Yes, they live their lives upside-down. And unlike regular catfish which stay at the bottom of the tank, they stay at the top because... well, they're upside-down.
Yes, they're really a thing
https://en.wikipedia.org/wiki/Upside-down_catfish
Pic, but not mine