Hallo Bernd,
Oh I’m already amazed!
The guaramis have just a wonderful calm way to move!
And I like the secret hidden atmosphere of black water tanks!
It’s just emotional that I’m worried about my fish if I can’t see once a day that they are still fine!
But I will trust in nature that they can survive! 😉
And some time ago today I could watch two or three of my four swimming around! 😉