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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 acclimatize 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. 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.
Treatment:
Change of diet with foods containing high fiber content, fasting for several days or antibiotics. Unfortunately, there is no cure for such disorder 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 acclimatization usually will never recover at all. In this case, it is recommended to destroy the fish.