Another disease that is common amongst Arowanas is upturning of gills or gill turning. This is reportedly caused by a lot of factors such as poor tank water quality, too little space and temperature changes. Water tank quality goes bad when there is too much food left in the tank, as result of overfeeding. The food that is left uneaten decays in the tank, causing foul smell and a relative increase in ammonia and nitrate in the water. Because of that there will be lesser oxygen levels inside the tank. Sudden changes in temperature can also affect your fish’ gills. The Arowana’s gills are sensitive to sudden changes in the hotness or coldness of the water. Another factor causing gill turning or curling is insufficient tank space. If your Arowana cannot swim around enough in its tank, this may result in development of weak gills.
Symptoms of Upturned Gills
The first symptom noted with an Arowana experiencing curling of gills is the gills inability to open and close well with every breath of the fish. This causes the gill cover to give up, curl outwards and expose the gills. As the gills are exposed, the fish is put at risk to infections. Naturally the fish will have difficulty breathing and is manifested by fast breathing. This encourages the fish to put its head above water just to breathe. The Arowana suffers from lack of appetite. The gills begin to function abnormally as a result of infection.
Care and Treatment for Arowanas With Upturned Gills
Once you have observed your Arowana not breathing well, the first thing you should do is to change the water in your fish tank. Around 20% of tank water is ideally changed once every two to three days. You can also use an air pump to provide more oxygen for your fish. You can also try moving your fish out into a bigger tank. If the gill covers of your fish has not hardened yet you can use a wave maker so when your fish swims against the current it makes, the upturned gill covers will naturally go back to normal. In worse cases however, as your Arowana’s gill covers have already curled up and hardened, an operation would be the most appropriate option to save your fish. This operation has to be done by an expert with properly sterilized instruments. In this procedure, the infected part of the gill cover, as well as tissues growing under it will have to be removed. The fish will have to undergo anesthesia before it is taken out from the tank. To prevent further infection, antiseptics or antibiotics may be given. Once the trimmed parts have grown, your fish is considered healed.Tags: arowana gill curling, arowana not eating, arowana care, gill cover, arowana appetite