How to Keep Cold-Water Fish? Detailed Explanation of Breeding Methods and Technical Points
Cold-water fish are a type of fish with a history of more than a hundred million years, known as “living fossils in the water.” Many brightly colored fish among them are bred for ornamental purposes. So what ornamental varieties of cold-water fish are there? How should they be kept?
What ornamental varieties of cold-water fish are there?
1. Pearlscale goldfish
The pearlscale goldfish is a very rare mutation, with scales that are hemispherical. If the aquarium is decorated with sharp objects such as rockery stones, the scales are easily rubbed off; although they will regenerate, they will not be as beautiful as before. Currently, common varieties include Red Pearlscale, Grass Green Pearlscale, Calico Pearlscale, and Crown Pearlscale.
2. Eastern bream
The Eastern bream is native to Europe, so it is also called the European bream. It grows quickly, has omnivorous feeding habits, and is tolerant of cold, salt, alkali, and low oxygen, making it extremely suitable for the water environment of northern China.
3. Medaka (Japanese rice fish)
The medaka is a small freshwater ornamental fish bred through artificial selection, hybridization, and purification of wild medaka. It has diverse varieties and is simple to feed and breed. It is omnivorous, gentle in nature, fond of swimming in groups, and easy to keep.
How to keep cold-water fish
The water temperature for keeping cold-water fish must not exceed 20 degrees. The fish tank (fish pond) should ideally have temperature control equipment, and the fish tank (fish pond) should have good waste elimination capacity. When feeding, determine the amount based on the size and number of the fish; if too much food is given and the fish cannot finish it, the water quality is likely to deteriorate. In addition, the fish tank (fish pond) should be cleaned and disinfected regularly.
Besides being ornamental, cold-water fish also have high economic value, such as salmon, rainbow trout, Ya fish, pike, and so on.