Is my oranda-type goldfish at deaths door?
Make sure you do a water change. Do about 25% using same temp water, don’t forget the dechlor. In 8-10 hours do another 25% Try using some frozen peas. Warm them between your fingers, pop them their shell and feed one half of the pea at a time. Peas will help clear out any constipation and in general are great for goldfish. Goldfish need large tanks though, 30-50 gallons is the best bet for a single goldfish. Fish that are kept in too small of a tank will stop growing on the outside but keep growing on the inside, causing their internal organs to press against each other making life miserable. See below for some more info. Good luck with your fishy!