When breeding goldfish, many breeders will consider the problem of mixed breeding. However, not all species can be mixed with goldfish. For example, guppies are not very suitable in general. First of all, their body size is quite different. There are many varieties of goldfish can grow to more than 10 centimeters, but guppies are very small, generally around 5 centimeters. If mixed together, goldfish may threaten the safety of guppies, and may eat guppies directly as food when there is very little food. From the point of view of body size, it is not suitable to mix the two.
Then there is the question of habits. The guppy to the water temperature request is quite high, generally speaking requests the water temperature above 22 degrees, but the goldfish is one kind of cold water fish; Moreover, guppies are much more sensitive to nitrite in water than goldfish. Therefore, from the point of view of habits, it is not easy to adjust the surrounding environment if they are mixed together.
Goldfish and koi should not be mixed together. In terms of size, goldfish are smaller, koi are much larger, and koi may bully goldfish if they are raised together. Moreover, in terms of temperament, Koi are more active and good at competing for food, while goldfish swim relatively slowly and may not be able to grab food. If this goes on for a long time, the growth and development of goldfish will be greatly affected.
