What causes gill hyperplasia?

Any irritation can lead to gill hyperplasia, most commonly from bacteria or parasites or from poor water quality. The most common causes are as follows: Protozoa: Trichodina, Chilodonella, Ichtyobodo. Parasites: Ichthyophthirius, Amyloodinium.

What is AGD in fish?

What is AGD? Amoebic gill disease (AGD) is a gill disorder found in marine fish, but primarily affecting salmon. The disease is well known in Tasmania, Australia, where is costs the industry up to A$230M a year, the organisms favour the warmer conditions found there.

Why is my fish losing gills?

Sources of stress include shipping, poor water quality, improper water chemistry, inadequate filtration, improper diet, overcrowding, leaving the light on 24/7, injuries, aggression from other fish and inadequate habitat.

What are the symptoms of gill flukes?

Symptoms: Gills swollen and pale, high mucus secretion, spreaded opercula, restless, near inflow, gasping air, heavy ventilation, dark color, loss of weight, cease to feed, swimming with high speed, jumping out of water, scraping against objects.

How does AGD affect fish?

The impact of compromised gills on fish health will therefore be profound, and in the case of AGD this gives rise to fish that lose the ability to feed, have difficulty breathing properly and also lack normal control of salts, fluids and blood gases and as a result if left untreated will die.

How do you treat gill disease?

Treatment of acutely-affected fish with chemicals such as formalin, chloramine-T or hydrogen peroxide, leads to an almost instantaneous recovery in clinical signs, due no doubt to a reversal of the vasoconstriction and resulting hypoxaemia.

Can fish recover from gill flukes?

Gill tissues are very badly damaged by the parasitic worms and do not entirely recover in case of severe, long-lasting infestation. Affected fish will then remain short-winded for the rest of their lives in spite of a successful treatment.