There are many illnesses that may affect goldfish, including the swim bladder. This is the small sac in the abdomen of the fish. The fish’s buoyancy is controlled by the swim bladder. Any changes can cause the fish difficulty in swimming to the top or bottom of their tank. If you have any concerns about your pet’s health, consult a veterinarian.
Bacterial Infection
The swim bladder function of goldfishes can be affected by bacteria. This could lead to him struggling to keep his head up, sinking, or floating. The onset of bacterial diseases can also be caused by cold-water fish like goldfish. For example, fish that are exposed to too much cold water can become stressed and more likely to contract disease.
Constipation
Constipated goldfish can become bloated and the impacted food can affect the swim bladder’s ability maintain proper buoyancy. PetPlace states that the most constipated goldfish types, such as lionheads, ryukins and orandas are more likely to become constipated than other varieties. A change in diet may be necessary if constipation is suspected to be the reason for buoyancy problems.
Physical Deformity
Due to their genetic makeup, some goldfish may be predisposed to having buoyancy problems. This is similar to how many human diseases are linked to genes. Sylvia Animal Hospital says that fancy goldfish, including fantails, have anatomical differences to the common, thin-bodied fish and are more likely to have impaired swim bladder function. It is impossible to treat a genetically impaired swim bladder.
Tumor
Tumors can cause buoyancy problems in goldfish, although they are uncommon. FishChannel states that any change in the density of a fish can lead to a loss of balance, and even a tumor-like growth. This can make the fish more unstable in the water, especially if he eats or his swim bladder is naturally compromised.
Swim Bladder Disease
The name swim bladder isn’t just the organ name; it also refers to the wide range of conditions that can cause buoyancy problems. According to NetPets, soaking your fish’s food flakes or pellets in water before serving can help reduce the likelihood of impending disease. If your fish has symptoms that indicate the disease may be already present, you can fast him for a few days to check if it improves. A frozen pea, that is skinless and thawed can be used to treat impaction. It is believed to help break down impaction.
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