change water for the small goldfish

The video likely worked due to its unexpected and somewhat humorous depiction of a goldfish being moved through a tube, creating a sense of novelty and curiosity. The visual of the tiny fish navigating the tube, combined with the simple on-screen text, made it easily shareable and engaging.

The video shows a person using a tube to transfer water, with a small goldfish visible inside the tube at times. The goldfish appears to be moved from one location to another via the tube, possibly as part of a water change or tank transfer.