A sunfish at an aquarium in Japan lost its appetite after the facility closed for renovations. To try and revive it, staff hung their uniforms and set up human cutouts outside the tank, which worked. The fish has now been steadily recovering and will return to the public when the aquarium reopens this summer.
Source: https://abcnews.go.com/International/wireStory/sunfish-began-ailing-after-aquariums-closure-recovers-after-117969008