? Koi and goldfish can be mixed. The main reasons are as follows:
1. The living habits of these two kinds of fish are not very different. Goldfish are suitable for living in waters above 18 degrees and below 26 degrees. Koi is suitable for living in waters above 20 degrees and below 26 degrees. When the two are mixed together, the breeder does not need to specially adjust the temperature of the water area and let nature take its course.
2, temperament is same: The temperament of these two kinds of fish is more gentle, mix breed together won't appear the phenomenon of fight appears.
3. Same feeding habits: These two kinds of fish have a relatively large thirst for food, and their feeding habits are relatively miscellaneous, so there will be no problem if they are mixed together.
keep Koi alone, because they are generally large in size, and they are prone to hypoxia when raised with other fish. In addition, their thirst for food is relatively large, and mixed farming with other fish is prone to snatch them, which can easily lead to malnutrition symptoms for a long time. In addition, polyculture with other fish may lead to slow growth and development problems, mainly because of the small living space.