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
Trub (brewing) fermentation. It is composed mainly of heavy fats, coagulated proteins, and (when in fermenter) inactive yeast. The term has its origins in the German word "trübe" (also "trüb"), which means "cloudy", via the brewing and winemaking terms "Trubstoff" ("cloudy" + "material") and "Weintrub" ("wine" + "cloudy"). Trub (brewing) In the process of brewing beer, trub is the term used for the material, along with hop debris, left in the whirlpool or hopback after the wort has been boiled then transferred and cooled. Brewers generally prefer that the bulk of the trub be left in the whirlpool rather than stay in