Goldfish have been introduced to many parts of the world in order to control the mosquito population. They are ubiquitous and can be found in streams, rivers, lakes, reservoirs, ponds, and every freshwater habitat. Whether it is in the aquarium or an outdoor pond, goldfish can withstand a variety of temperatures. When it comes to fishes, they are gentle and have to be taken care of while placed with other fish. They are most compatible with the warm water fish guppies, but they are tiny and may end up becoming the dinner of the big goldfish.
Variety of suitable temperature for goldfish:
- Room Temperature – Room temperature is excellent for the goldfish unless the temperature does not pass 90 degrees. On a worse summer day, the aquarist needs to keep in mind that he changes the water with cold water a couple of times a day. To ensure year-round good health of the goldfish, by maintaining a pleasant 70 degrees temperature at all times.
- Cold Water – While you freshen the water with fresh dome water, the goldfish will perk up and swim in the cold water. Therefore, it is always recommended to change the quarter of the aquarium water with some degrees of cold water as the fish will enjoy the water from freezing to 85 degrees. The fish will swim a lot slower in the uppermost and low-temperature range.
- Freezing Water – The Goldfish can handle and survive in an outdoor pond just fine. Unless the pond does not freeze up in the winters and is 3 feet deep, the goldfish can spend the winters in it with partial hibernation. Otherwise, the goldfish that goes deep in the pond in search of cold water will freeze in the ice, and you will witness it in the spring thaw.
- Increasing the water temperature for Spawning: Breeding goldfish requires a gradual increase from cold water to warm water, which simulates the melting of springs in open ponds. If the aquarist wants the fish to lay eggs, water at room temperature must be partially changed, and cold water used several times a week until the water temperature in the tank remains at 38 to 40 degrees. After a few days, the aquarist must replace colder water with warm water to around 65 to 70 degrees.
But do goldfish need a heater?
It is not true that goldfish require a heater. In most of the home aquariums, they can survive quite happily without a heater. It all depends on the temperature to breed your fish. If your water temperature is below 20°C (68 °F), we recommend buying a heater.
There are various temperatures suitable for Goldfish habitat. The only thing is, you have to take care of the temperature in the breeding times and during extreme heat. Coldwater is a delight for the goldfish. In the winter season, they will go in partial hibernation and grow slower than the usual. Place the sensitive goldfish with the smaller warm water fish guppies as they are more compatible with them.