Swim bladder of collagen. They can be made into a strong, water-resistant glue, or used to make isinglass for the clarification of beer. In earlier times they were used to make condoms. Swim bladder disease is a common ailment in aquarium fish. A fish with swim bladder disorder can float nose down tail up, or can float to the top or sink to the bottom of the aquarium. Many anthropogenic activities, like pile driving or even Seismic wave, that could result from climate change or natural causes, can create high-intensity sound waves that cause a certain amount of damage to fish that
Dried and salted cod Other names include "ráktoguolli/goikeguolli" (Sami), "klipfisk/klippfisk/clipfish" (Scandinavian), "stokvis/klipvis" (Dutch), "saltfiskur" (Icelandic), "morue" (French), "saltfish" (Anglophone Caribbean), "bakaljaw" (Maltese), "labardan" (Russian). The fish is beheaded and eviscerated, often on board the boat or ship. (This is feasible with whitefish, whereas it would not be with oily fish.) It is then salted and dried ashore. Traditionally the fish was sun-dried on rocks or wooden frames, but modern commercial production is mainly dried indoors with electrical heating. It is sold whole or in portions, with or without bones. Prior to the collapse of the Grand Banks (and other) stocks due to overfishing, salt