My Favorite pet - Gold fish

Everyone has its own favorite pet, I have a pet fish before, but I know is not anymore, because our family don't have let much time to feed it, when we are feeding fish , we have to clean the tank every week, so we give those our fish to other people a few years ago.

My favorite fish is goldfish, its scientific name is Carassius auratus, it is am ornamental fish native from China, and its color is evolved from wild salmon. Goldfish eats animal, leeches, and also many synthetic baits, and they are easy to keep, they like low-temperature water, the best living temperature is 15 degree to 18 degree Celsius, but they can even live in 34 degrees or as low as -4 degrees, it can also survive under the ice, so it is very easy to keep it. The heart of it is very goldfish is small, so it can withstand the rapid temperate change, so it cannot survive outdoors in areas with a large temperature change, between day and night.