I hope this is not off topic. I love using 4k screensavers for my tv, like long forest walks, birds, or fish. Unfortunately almost all of the fish ones are creatures from the oceans. I like those too, but does anyone know of some nice, hours long, videos from freshwater fish or shrimp?

I miss my fishtanks, so i would really enjoy watching them on tv, whether in the wild or in big tanks.