@rav3n @Chasingsunsets i found some photos of the fish. Keep in mind the tank was a 4ft (1.2m) wide tank, so when you see this, consider the scale and the other fish in these photos weren't small either for their species.

That giant orange thing? Yep, goldfish .
The fish below it? A silver shark, which was very large for its species (6yo?).
To the right near the filter? That's a dwarf gourami.
How big was that goldfish... from memory, the body (exclude tail) would have been abit over 15cm? Then add the tail size too.
Im glad I have this photo. Evidence my crazy sized goldfish was real 🤣. I used to grumble at how much he would eat. Id drop sucker-fish tablets into the tank for my bristlenose, ghostknife and loach, but the darn goldfish would steal it on the way down - it could fit the whole tablet in its mouth!!! 😮
As for adrenaline rides. Nope nope nope nope. Im unashamedly a woose 🤣🤣. Snorkling though, yes I will do - and hopefully will be doing on my upcoming trip. I love watching wildlife and so snorkling fits the watching fish etc.
I did go on some rides at Universal Studio Japan, but I did not enjoy the Hollywood ride because its too much adrenaline 🤣🤣🤣.
I had a psychiatrist who said that I should take up adrenaline sports to feel more alive / excitement /energy. 🫣 there was no chance of that happening lol.