The gas bubble illness (GBK) of fish develops, if in the water more gases are solved, than corresponds to the equal in pressure weight with air. One speaks then of a gas supersaturation, which can be determined with the help of a Saturometers.

The GBK can take very different forms, depending on how strong the gas supersaturation is and how long it already continues.

In the acute case large blisters in the skin between the fin jets and in the shed bags form, so that the fish can look such as Tannenzapfen. After such injuries often laminar Verpilzungen forms on the skin. Usually the fish die however in such cases acutely.

If a weak gas supersaturation prevails over longer time, then the blisters develop usually gradually in the blood vessels, particularly in the Kiemen. Parts of the Kiemen can die by the Gasembolie. Or the gas bubbles collect themselves in the heart and lead to the cycle failure. Frequently accumulations of gas behind one of the eyes form and finally drive it from the cave. The fish will color then on one side blindly and itself on this side usually darkly.

Fish are also clearly more susceptible under the influence of weak gas supersaturations to infections.

Articles in category "Gas bubble illness"

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