How To Care For My Goldfish. A tank of about 15 gallons would be perfect for a single goldfish and you would only need to change about 30 of the water every week. Maintenance of a tank is much easier and can be less frequent.
They often starve if housed in the same tank. Goldfish have a lifespan averaging about 10-15 years with some varieties living up to 30 years when provided with proper care. You can find the perfect water conditioner for your goldfish here you only need a few drops.
Check your goldfish every day for any signs that theyre getting sick.
One good rule of thumb is not to feed them more food than the size of one of their eyes. Housing needs to meet both their behavioural and physiological needs. Transfer your fish to a separate holding tank. Remove the waste from the substrate by slowly moving the pebbles.