Originally Posted by hoppycalif
I learn something new every day! Fish bandage? Do some people operate on fish? Stitch their wounds? If I tried doctoring a fish I would almost certainly do more harm than good, violating the oath all doctors have to take. Do no harm.
Here's a fish vet working on a skin ulcer. He used a spray of antibiotics and then a 'fish bandage' over it. https://youtu.be/GCyNcsGlxjk?t=468
It's a gelling cellulose powder. Not exactly sure which but I'm thinking it might be Methylcellulose.