Do carbonated beverages reduce bleeding from fish gill injuries? 11/16/2021 9:33:00 AM View Count 974 Releasing fish due to size limits or for catch-and-release practices has anglers trying new methods to help severely hooked fish. Fish hooked in the gills have lower survival chances. Some anglers say pouring carbonated water or soda pop over hooked gills helps. They claim the carbon dioxide causes blood vessels to constrict or that phosphoric acid in beverages causes blood to clot. Let’s burst this bubble and see if it is fizz or fact.