Goldfish bent

Goldfish bent to one side indicates nitrate poisoning

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Goldfish bent or in a curled position are suffering from nitrate poisoning. Nitrates destroy the blood cells causing extreme pressure and pain. In most cases, the goldfish keeper performs a large water change which worsens the condition. Goldfish in water with high nitrates need deep water, and removing too much at one time reduces the water pressure, increasing the pressure in the body. Even worse, some keepers move the fish into a hospital tank after noticing it’s not behavior. These hospital tanks are typically shallow, and low in oxygen due to bubblers or air pumps

Goldfish curled sideways

Goldfish suffering from nitrate issues require water that is deep and water that is rich in oxygen. In most cases, fish may succumb to nitrate poisoning due to the fact the water is low in oxygen. Getting the blood oxygenated is the key to recovery

Goldfish not eating

If your goldfish folded over has been poisoned by nitrates, exchange only 5% of tank or pond water every half hour to reduce levels gradually and safely. This method of exchanging water also keeps the water table high

Goldfish bent

Even the healthiest goldfish need water that is rich in mineral value and oxygen, but if your fish has experienced high nitrates or any level of nitrite, it will need these conditions even more. Don’t settle for parameters that are in the comfort zone; reach for the top. Most goldfish keepers are unaware of the conditions that goldfish require; cold and fast moving water

Goldfish bent sideways

Water is oxygenated by the diffusion method. This is when the surface absorbs oxygen from the air above it. If your aquarium has a top on it, remove it. Install a pond pump in your aquarium. They come in all sizes. No other HOB filter or canister is capable of clearing a body of water. Gases created from waste take up space, keeping oxygen from entering

Test pH; made up of oxygen and KH. Comfort zone for KH is 100 to 140 ppm. Buffer KH to high end of the zone for optimum benefit. If pH is still low, water is low in oxygen

goldfish bent

Goldfish may experience nitrate shock when moved from water high in nitrates to water low in nitrates and vice versa

Test for nitrates. Comfort zone is 20 to 40 ppm, but goldfish suffering from nitrate issues past or present may prefer lower levels; 5 to 10 ppm being super sensitive

Perform 911 Water Change to reduce nitrate levels

Refer to:

Learn about nitrates and the dangers


Mean Green Remedy

Back to symptoms and ailments

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Author: Brenda Rand


By Venus

Master goldfish keeper