What are the fish that tolerate low temperatures? What are the aquarium fish that are resistant to l

Ratfish, and there are some fish of the catfish family that are cheap.

Generally, tropical fish at 20 degrees Celsius can survive but their mobility is reduced and their appetite is reduced.

You can try the trout above 0 degrees.

Cold-water fish should be able to survive under the ice to be called cold-water fish, such as carp, crucian carp and other ......There are many varieties of koi, red crucian carp, and goldfish that do not need to be heated in the fish tank, and can be safely eaten in the water under 10 cm thick ice in winter.

Not all tropical fish are quite hardy, my goldfish are frozen in ice in winter and can't move, and they are still alive after taking them home and melting the ice.

Goldfish and koi fish, 20 degrees are generally OK for tropical fish, but angelfish and so on

20 degrees is generally OK for tropical fish, but for colorful and so on, you have to choose some that can be mixed with blood parrots.

Of course, it's guppies, so I don't need to heat them up.

Its bottom energy is 14 readings of low temperature, the most low-temperature resistant tropical fish, but Chengdu is particularly cold in winter, it is estimated that in addition to koi, goldfish, others have to use heating rods.

1. Ratfish: It is a subfamily of catfish, they have two cute little "whiskers" next to their mouths, similar to small mice swimming in the water, so they are named "ratfish", the body is draped with bone plates, and the first fin of the pectoral fin and dorsal fin is hard spines, which can be used to protect themselves, but unlike the special-shaped fish, the bone plates on both sides of the body of the rat fish are made of equal hard scales up and down, dense and regularly arranged;

2. Penguin fish: tropical freshwater fish, belonging to the middle layer of fish, with social sex, reproduction is also collective sperm ovulation. Its swimming posture is quite special, the body will have an elevation angle of about 30 degrees, and the head is facing up, which is also known as the morning sun swimming style.

omnivorous carnivorous fish, feeding on aquatic insects and crustaceans;

3. Angelfish: also known as swallowfish, angel fish, small angelfish, small-fin sailfish, etc., cichlid, angelfish, native to Guyana and Brazil in South America, with a body length of 12 to 15 cm and a height of 15 to 20 cm, the pelvic fin has evolved into a tentacle as long as a tassel, a short tail peduncle, and an extended upper and lower end. It is divided into long-tailed, medium-tailed, and short-tailed, and the pectoral fin is colorless and transparent.

Angelfish are known as the "Queen of Tropical Fish" with a quiet personality, chic swimming style, and suitable for polyculture, with a suitable water temperature of 26 degrees Celsius to 32 degrees Celsius.

Baby bass are not tolerant to low temperatures, and small bass prefer to live in water with a water temperature of 22-28.

The water temperature in this zone is very favorable for their healthy growth. Ph.

They are not very strict about the pH of water. Feed in neutral water with a pH in between.

Attention Baby Bass:

When it comes to conservation, we also need to provide appropriate shelter, which can pile up stones to form stone crevices or caves, and they will hide in them and occasionally come out to feed.

Only by doing so can they increase their sense of security.

Make it hair colored. Or by increasing the breeding density, they may become a little bolder, and the same will have a group swimming effect.

This fish still likes a certain current, but it should not be too turbulent, not only will it not be good for the fish, but it will even cause it to jump out of the tank.

Dear, Hello, I am glad to answer for you There are 14 species of cold-water fish in our country. There are three main types of cold-water fish species: one is through biotechnology and the introduction and cultivation of high-quality rainbow trout species, such as triploid rainbow trout, all-female rainbow trout, Dow rainbow trout, hardhead trout, golden trout, etc.

The second is to introduce new cold-water species from abroad: such as Atlantic salmon, coho salmon, white-spotted salmon, mountain trout, etc. The third is to develop China's indigenous cold-water fish species such as char, fine-scale fish, sturgeon and so on.

The breeding environment conditions are high-density intensive farming methods. Cold-water fish are predatory fish and are very suitable for high-density flow-through culture. A large number of edible fish can be cultivated in a limited water body, which is incomparable with other fish, the general pond stocking density is 800 to 1500 catties per mu, high-density flowing water aquaculture is stocked 20 to 30 per square meter, the stocking density of high-density flowing water is dozens of times higher than that of other pond fish farming, and the yield of high-density flowing water aquaculture per mu is more than 5000 catties, therefore, high-density flowing water aquaculture occupies less area, and the yield per unit area is high, which can make full use of fish ponds and water volume, improve production efficiency and reduce production costs.