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Symptoms: Goldfish has bulging eye(s); Goldfish bulging on side; Goldfish has bubbles escaping mouth; Goldfish has bubbles escaping gills; Goldfish has tumors; Goldfish has tumor looking bumps; Goldfish has dilated veins in dorsal area; Goldfish is gasping at surface; Goldfish has bulging on one side
Gas Bubbles are caused by supersaturated gases (concentrated amounts of oxygen) found in tap water. These gases push oxygen out of the water suffocating fish. These gases also enter the body forming pockets of gas under the skin. Although these tumor looking bumps aren't dangerous, it's an indication that there is not enough oxygen in the water.
Perform fresh water change working water over by pouring several times, before adding to tank. Reduce water temperatures. To avoid; increase surface action.
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