Q:

Why do goldfish lie on the bottom of the tank?

A:

Quick Answer

A dirty aquarium, parasites, swim bladder and aggressive fish can all lead to a goldfish staying on the bottom of the tank. Most of these causes have easy fixes.

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Full Answer

Goldfish tanks should be changed regularly. They are very messy fish that create high levels of ammonia. The ammonia can cause them to become sick and stay on the bottom. Goldfish can get fish lice and other bugs if they are not properly cared for. There are medications used to prevent or stop infestations. Swim bladder is another cause for bottom swimming or laying. If the fish does not have the proper diet, they become constipated which pushes on the swim bladder and messes with their buoyancy. Aggressive fish also cause goldfish to stay on the bottom and attempt to hide.

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    Why do goldfish sink to the bottom of the tank?

    A:

    Goldfish that sink to the bottom of the tank often suffer from disorders in the swim bladder, where digestive gases are exchanged. Swim bladder malfunctions affect buoyancy. Several factors impact the swim bladder, including infection, tank depth and width or outside environmental influences. If buoyancy issues continue for a period of time, the fish is unable to feed or reach surface water.

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    Why does my goldfish float upside down at the bottom of the tank?

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    A goldfish that floats upside down at the bottom of the tank may have swim bladder disease, as stated by FishChannel.com. This is a syndrome with many potential causes, including infection, shock, injury or deformity.

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    Why do goldfish swim at the bottom of the tank?

    A:

    Goldfish Connection indicates that goldfish sit at the bottom of an aquarium because of high or low levels of certain chemicals, such as ammonia or nitrates, in the water. A low pH level can also cause goldfish to settle on the bottom of the tank.

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    What are big-eyed goldfish?

    A:

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