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Gas supersaturation gives fish bubble disease

FISH HEALTH NOTES by Rod Getchell

ITHACA, NY – Have you ever noticed that a cold glass of water will get tiny bubbles on the inside surface as it warms up? Bubbles form because dissolved gas – primarily nitrogen and oxygen – in the water comes out of solution and coalesces on the irregular surface of the glass. The warmer water is supersaturated with gas.

The same process can occur inside the blood vessels of fish, and those tiny bubbles can kill 100% of susceptible species in a very short time. The bubbles get caught in the fish’s small capillaries, becoming most visible in the gills, skin, fins, and even the eyes.

 

Read the rest and much, much more in Issue 4, 2012 of Fish Farming News.  Download now for immediate access and keep the .pdf for future reference.

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