CATDOLL : CATDOLL: Fish from the bottom of the sea? Fish from the bottom of the Yellow River?

1. Fishes in the seabed?

1. Yellow croaker Yellow croaker is called yellow croaker because its scales are yellow. Yellow croaker is one of the four major seafoods. Yellow croaker includes king fish, big yellow croaker, etc.

2. Rice fish Rice fish is also called croaker. It looks very similar to sea bass, with a grayish white belly. The shape of rice fish is also a relatively notable marine fish, and it looks quite different.

3. Red stingray Red stingray is a species of fish that can often be seen in coastal areas. This fish has a hard spine on its tail, which contains a poison gland. All anglers must pay more attention, as being stung will cause severe pain.

4. Hairtail Hairtail is also one of the four major seafoods. It is mainly distributed in the Yellow Sea, East China Sea, South China Sea and other areas. This fish has a very ferocious character and mainly preys on squid and other marine creatures to survive.

5. Pomfret Pomfret is a fish that can be eaten and admired. It lives in subtropical to tropical regions.

2. Bottom fish of the Yellow River?

There are about 121 species of fish in the Yellow River, 98 of which are pure freshwater fish. There are only 16 species of fish in the upper reaches, mainly carp and loach, including schizothorax, yarrow, and striped loach.

There are 71 species of fish in the middle reaches, and there are few common plain fish. There are 78 species of fish in the lower reaches, which are basically estuary fish and brackish water fish. The main fish species include Yellow River carp, Yellow River pigeon fish, Yellow River naked split fish, etc.

3. What is the distribution of fish species in ocean waters?

The distribution of fish in the ocean has a lot to do with the water depth. Waters of different depths are suitable for different types of fish. Here are some common situations of fish distribution in ocean depths:

1. Shallow sea (water depth 0-200 meters): Shallow sea is the habitat of most fish. Generally, shallow waters are rich in a variety of small fish, including perch, carp, cod, mackerel, etc.

2. The marginal waters of the continental shelf (water depth 200-1000 meters): The marginal waters of the continental shelf are suitable for the life of large fish, such as minnow, cod, mackerel, tuna, etc.

3. Mesocean layer (water depth 1000-4000 meters): The water depth in the mesocean layer is relatively deep, with relatively few fish resources, which is suitable for the growth of large mesocean swimming fish, such as sharks, rays, etc.

4. Deep sea (4000-6000 meters deep): The deep sea is extremely deep, with low temperature, very little light, and extreme environmental conditions. Only some specific types of fish can survive here, including fish, stonehead, etc.

It should be noted that the above are just some common situations. In fact, the distribution of fish in the ocean is also affected by other factors, such as water temperature, salinity, bottom quality, etc. At the same time, human fishing activities also have a great impact on the distribution of fish in the ocean.

4. Sub-cold water fish?

Silver carp is a typical filter-feeding fish, and its natural bait is the plankton in the water. In the process of fish farming, a lot of food residues and fish feces are produced. When these things decompose in the water, the aquaculture water will become "eutrophic", and when the water is eutrophic, a large amount of plankton will be produced. Then, by controlling the number of plankton in the water through the feeding of silver carp, the water quality can be purified. Of course, this is also what we often say, raising silver carp together with other main fish.

5. Is tilapia a warm-water, temperate-water or cold-water fish?

Warm water,

Tilapia, commonly known as African crucian carp, belongs to the order Perciformes, the suborder Perciformes, the family Cichlidae, and the genus Tilapia (also known as the family Cichlidae). This genus is native to Africa and has more than 600 species, of which 15 are currently farmed. Tilapia is a group of small and medium-sized fish. Its appearance and individual size are somewhat similar to crucian carp, and its fins are more like those of mandarin fish. It is a euryhaline fish that can survive in both sea and fresh water; it tolerates low oxygen and generally lives in the lower layer of water, but changes its water layer with changes in water temperature or fish size.

Tilapia has a wide range of diets, most of which are omnivorous and mainly plant-based. They are very poor eaters and have a large food intake. They grow rapidly, especially in the juvenile stage. Tilapia growth is closely related to temperature, with a growth temperature of 16 to 38 degrees Celsius and an optimum temperature of 22 to 35 degrees Celsius.

Tilapia was first introduced to Taiwan Province from Singapore by Wu Zhenhui and Guo Qichang in 1946. In memory of these two people, it was first called "Tilapia". It was introduced to mainland my country from Vietnam in 1957 and is also known as "Vietnamese fish". Because it is native to Africa and looks like local crucian carp, some people call it "African crucian carp".

There are two kinds of tilapia introduced to Yingshan Hot Spring in Hubei: one is called Mozambique tilapia, which was brought to Yingshan Hot Spring from Jingshan County in 1972; the other is called Nile tilapia, which was introduced by Hubei Fisheries Research Institute in 1979. After they settled down, they all lived well.

Dr. Modadugu Vijay Gupta of India won the 2005 World Food Prize for developing and disseminating low-cost technology for freshwater aquaculture (using tilapia).

The main production area of ​​tilapia farming in my country is the southern region. According to statistics, the production of tilapia in Guangdong, Guangxi and Fujian in 2000 exceeded 100,000 tons. Guangdong Province has always been the main production area of ​​tilapia farming in my country. For example, the province's tilapia production in 1999 was 210,000 tons, and the tilapia farming production in 2000 reached 250,000 tons. By 2001, the tilapia farming production reached 270,000 tons, accounting for 40% of the total tilapia production in the country. The production in 2002 was 290,000 tons, 390,000 tons in 2003, and 440,000 tons in 2004, accounting for 49% of the country. Tilapia has become the largest freshwater aquaculture species after grass carp, bighead carp and silver carp. The output of tilapia in Hainan Province was more than 60,000 tons in 2000, more than 70,000 tons in 2001, and 82,000 tons in 2002. In 2003 and 2004, the output of tilapia in Hainan Province remained at about 100,000 tons, accounting for 70% of the province's freshwater fish output. As can be seen from Table 1, tilapia has become the mainstay of aquaculture in these areas. In my country's aquatic product introduction projects, tilapia is the most successful species in terms of both economic benefits and social benefits.

6. What are the freshwater bottom fish?

There are many bottom fish, such as stingray, flower loach, three-striped rat, scavenger, red-tailed catfish, shovel fish, black-line flying fox, etc. Among them, the scavenger is the best choice for bottom fish because it can clean the dirt on the bottom of the water. However, this kind of fish is not good-looking. You can also choose some more beautiful bottom fish, such as stingray, red-tailed catfish, etc. Although they do not have many functions, they are very beautiful.

7. Is loach a warm water fish?

yes.

Loach is a warm-water fish with strong adaptability to the environment. It mostly lives in shallow waters such as ponds and lakes with still water or slow water flow. It usually lives at the bottom of the water. When the water is dry, it drills into the mud and can survive out of water. Loach can not only breathe with gills, but also breathe with skin and intestines. Breathing with intestines is a unique physiological phenomenon of loach. The intestinal wall of loach is thin and rich in blood vessels, which can assist breathing and gas exchange. When the water is dry in drought, it will dive into the 10-30 cm mud layer to "hibernate". A small amount of water can moisten the skin to maintain life. Loach is an omnivorous fish, and its food is animal and plant debris and microorganisms.

8. What are the cold water fish?

Common cold-water fish include salmonids, including rainbow trout, brown trout, etc.

It is now a common breeding species in Northeast my country. Pike, Salmoniformes, the white pike in Xinjiang, my country, is a cold-water fish, extremely ferocious, and no worse than the mullet in the Yangtze River Basin. Sturgeons, such as the Russian sturgeon, are typical Siberian cold-water fish. Some species of the Cobitidae, such as the northern loach and the flower loach, are mostly produced in Northeast China. The cod, the burbot, is a fish with many dorsal fins. In addition, there are also some species of the Perch, Cyprinidae, and Sculpinidae that live in cold waters and can be considered cold-water fish.

9. Are there sea bream at the bottom of the water at a depth of 20 meters?

have

The sea bream is also known as the jiaji fish, copper plate fish, jia la, red crucian carp, etc. It has a large head and small eyes. It is bulging, with the upper and lower jaws being about the same length. There are 4 canines at the front of the upper jaw and 6 canines at the front of the lower jaw. The body is oval, with medium-sized scales. The dorsal fin is continuous and opposite to the anal fin. The pectoral fin is pointed and the caudal fin is forked. The body of the fish is light red, with small blue spots on the back and a white belly.

Red snapper is a near-shore bottom fish that lives in the sea layer at a depth of 20-60 meters. It prefers to live in reefs, gravel or sea areas covered with shellfish and algae, and does not migrate long distances. It becomes sexually mature at the age of two.

10. Are there fish at the bottom of the water at a depth of 30 meters?

There are fish below 30 meters in the reservoir, but compared to the surface, there are fewer fish living at such a deep position, but they are generally larger. Most freshwater fish actually live in relatively shallow waters. If they stay in too deep waters, they will not adapt. For example, at a depth of 30 meters, the temperature is too low, and there are factors such as food shortage and excessive pressure that affect their normal life. The water temperature below 30 meters is relatively low, and it is not difficult to catch food in this place, so many factors will affect the survival of fish.

But fish like the black carp prefer to live in deep water areas.