guppy is not cold water fish, should not use cold water to raise them. The temperature range they can accept is 20 ~ 30 ℃, while the temperature of cold water is generally between 12 ~ 16 ℃, which is beyond the tolerance range of guppy. And guppies are tropical fish, and their living environment is usually warm. Although they can survive in water at about 13 C, low temperature will adversely affect their growth and development. And for a long time, the immunity of fish will also decline, and it is easy to get sick. If the fish is sick, the treatment will be more troublesome. Therefore, it is better not to use cold water to breed guppies.
Tropical fish like guppy usually survive in an environment where the temperature is above 20 degrees Celsius. However, their cold tolerance is relatively strong, even between 16 and 20 degrees Celsius, fish can maintain the activity of the body and maintain normal growth. However, if the temperature is lowered to 13-16 C, the fish with poor physique will not like to eat and stop swimming. At this time, the vitality of the fish is more fragile. If affected by other environmental factors, their mortality rate will be very high. For the sake of insurance, the temperature of cultured guppies should not be lower than 16 C. If the temperature is relatively low in the region, it is best to control the water temperature above 20 C, in order to avoid a sudden drop in temperature to fish tolerance range.