A Reddit user named “leability” posted this image of a goldfish with a harness that has what looks to be a bandage with a cork stitched to it wrapped around its body. The message linked to the image what “goldfish wheelchair for a fish that was having trouble staying upright”.
Although the source or purpose of the image above is unclear, “slings” or “wheelchairs” are occasionally crafted to keep sick goldfish in an upright position. The UK news outlet Daily Mail reported that fish can encounter problems with keeping themselves upright for a number of reasons including “sudden changes in temperature, pressure from food or air in the stomach, and infections”.
YouTube user “synirr” posted this video (below) in 2010 with a caption: “My disabled goldfish scooting around in her newly redesigned sling. She has trouble maintaining buoyancy on her own. She looks a little silly, but it is better than lying at the bottom of the tank all day!”