Goldfish poisoning is not uncommon. Usual symptoms include darting around the tank wildly, appear uncoordinated, gasping for air.
If you suspect poisoning check for the following:
- Insecticide Exposure: For Example treating your dog for fleas or ticks or your plants for aphid in a room that an aquarium is in.
- Lead Poisoning: Water that has come in through old Lead Pipes.
- Copper Poisoning: Water that has come in through newly laid Copper piping or a continuous flow water heater.
- Paints, Solvents, etc.: Organic based solvents and cleaners should not be used in rooms with aquariums.
- Inactive Filter Bacteria, Overdose of Medication, or wrong medication for Goldfish Illnesses. This usually results in an elevation of Nitrite and/or ammonia levels.
Treatment: Remove offending agent and do a water change immediately. Check Nitrite and Ammonia levels.
More information on Goldfish Illnesses.
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