Definition of Term

gas bubble disease

(English) Supersaturated gases (>125%) in water entering the body fluids of fish causing bubbles, an embolism. Often seen in gills, eyes, skin and yolk sacs where membranes are the most gas permeable. Fish often swim upside down or vertically, sometimes looking as if they are gasping for air at the surface and may have exophthalmia. Found below power plants in winter when cold water is rapidly heated by passing through condensers and in hatcheries using borehole water. (See also: gas supersaturation, exophthalmus)

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