Velvet disease is caused by the parasite Oodinium. The symptom is a golden velvety coat on the fins and body of the fish. The disease is sometimes hard to detect in goldfish that are mainly orange in color, since this is almost the same color as the disease. Often the best way to treat this disease is to use a commercial product available in pet stores and online. If a commercial solution is not available , then a progressive salt bath treatment can be used to treat the disesase.
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