Friday, October 9, 2020

Freshwater Fish Diseases Part 8 ( Swim Bladder Disorder )

Swim Bladder Disorder




Symptoms:

Limited signs of bloat though usually no physical damage is found, fish struggles to balance itself sometimes going “belly up” due to lack of proper buoyancy


Causes:

Often indigestion with goldfish, blood parrot cichlid and “balloon” strains becoming more vulnerable to the disorder rather than most fish species, bacterial infections, damaged swim bladder, the use of floating foods which when ingested allows entry of air to the digestive system, congenital or development causes, birth defect, sudden trauma from sudden changes in water conditions or failure to acclimate the fish properly.


Causes can be difficult to determine although possible causes are often leaned on the use of floating foods, indigestion and damaged organs by assumption. Genetics also play a role in this issue. It has long been argued that floating foods should never be used at all especially for goldfish. It is in the best interest of the safety of the fish that sinking foods be used instead of floating foods or try to squish the foods until they sink.


Updated version: The ongoing debate regarding the use of floating foods has been stretched further that the use of foods that primarily composed of starch-based ingredients has been pointed out. After further analysis by those who keep goldfish, it was found that the bacteria lining the digestive systems are also one of the culprits contributing to buoyancy issues. Although the goldfish has no enzymes to digest the starch, the bacteria make up for the lack of enzymes but in return, produce gas which when trapped in the GI tract, can cause buoyancy issues. Most fish get "floaty" despite the switching of food products from floating to sinking and this can easily be pointed to the starch ingredients found in the food.



Treatment:

1. High fiber diet and fasting.

Switch to foods with high fiber content. In this case, most fish fail to expel wastes due to the foods clogging the digestive system especially with air trapped inside. Fasting for a few days or weeks also helps dislodge the foods from the GI tract.


2. Antibiotics

This one is very tricky. There is no telling how the fish became "floaty" and it could be bacteria or virus causing the issue if the food diet is not an issue. Administer only if you are sure this is the issue. A lot of viral infections are resistant to treatments and in this case, the fish may need to be destroyed.


3. Gel Foods and Acidophilus

It has already been pointed out in most cases starch is the common cause of buoyancy issues with goldfish. Despite it being digested by the bacteria, the bacteria also produce gas and while this is not an issue with streamline bodied fish, most fish have a rather compressed GI tract where the air is easily trapped. The use of Lactobacilli acidophilus through incorporating it in gel foods help quell the gas trapped in the GI tract. It is likewise recommended that starch based foods be avoided completely and switch to other foods that do not contain starch such as yeast, corn, etc.


Unfortunately, there is no cure for most cases where this disorder is involved although in some cases, the fish can recover depending on the cause of the disorder. Fish that suffer from this disorder due to sudden trauma from improper acclimation usually will never recover at all. In this case, it is recommended to destroy the fish. 

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