Difference Between Saltwater Fish and Freshwater Fish 5

1. Freshwater fish live in freshwater, and saltwater fish live in seawater.

If you want to raise freshwater fish, you should pay attention to the pH value of freshwater, the water in the north, especially in Beijing, is hard, and if you want to raise a good freshwater fish such as colorful and squeamish, you should lower the pH value, so that the water is acidic, and generally use resin that lowers the pH value.

The water for raising marine fish is artificially configured, and the water quality will be kept around after the water quality is stable, and the pH value of the water is generally not required, but the intensity of the light will affect the pH value of the seawater, and sometimes it will reach the level of biological urgency, but the pH value of a mature seawater tank will be very stable in a safe area because of the action of algae and bacteria.

Freshwater fish need to change the water regularly, there is no rule for this, but changing 1 10 times a week is necessary for the organism to grow well. Because of the strong filtration system of seawater fish (mainly the high cost of seawater), the number of water changes and the amount of water are far lower than that of fresh water, I will not say the specific amount, because I don't change the water much, but I have changed the water half a year, the reason is that a friend made a big tank, and I also made a new small tank, so I changed the old water of half a tank, hehe.

2. Temperature In contrast, freshwater fish have higher temperature requirements than saltwater fish.

Because in the sea, the water temperature may reach 40 degrees Celsius under direct sunlight at noon, but at night, when the sea rises and the tide goes out, the cold water can reduce the water temperature to more than 20 degrees.

If such a large temperature difference is placed on freshwater fish, it may catch a cold in a few days.

In this respect, marine fish are much more solid than freshwater fish.

3. Disease resistance.

Freshwater fish are generally "produced" by fish farms.

Marine fish, on the other hand, are mostly wild-caught.

Moreover, in the sea, the living conditions are very harsh, and all those who can survive are "strong", so in terms of physique, there are too many saltwater fish to be stronger, and there are too many freshwater fish.

Moreover, seawater is saltwater, and there are not as many germs and viruses as freshwater, so as long as the water quality is well controlled, the lifespan of saltwater fish will be very long.

4. Body color.

I won't say much about that! Saltwater fish are much more beautiful and weird than freshwater fish.

5. Reproduction Many freshwater fish can be artificially reproduced, especially peacocks and other ovoviviparous fish can successfully give birth to the next generation if they are very light.

However, the artificial breeding of marine ornamental fish has always been the focus of the aquarium world, and it is not without successful examples, but it is really rare.

6. Other organisms.

Marine fish breeding also includes coral breeding, the ocean is the cradle of life, and its biological richness is much higher than that of fresh water, which everyone should understand without going into detail.

Saltwater fish live in saltwater, and freshwater fish live in freshwater.

Saltwater fish like to eat salty, and the taste is heavy! Freshwater fish has a light taste.

There is a difference between fresh water and salt water in terms of harm to the human body, taste, and storage amount.

1. The harm to the human body is different.

salty water, which contains a large amount of inorganic heavy metal salts, is harmful to the human body when drinking; Filial piety.

Freshwater comes partly from groundwater, partly from glaciers, and partly from freshwater lakes, and groundwater can be drunk directly without harm.

2. The taste is different.

Salt water contains a lot of salt, and the taste of salty and bitter is saltwater (usually called salt water).

Water that contains little salt or is barely polluted is freshwater. There is no taste.

3. The storage capacity is different.

Salt water accounts for 71 percent of the Earth's water.

The total volume of water on Earth is about 1.4 billion cubic kilometers, of which only freshwater, or only 100 million cubic kilometers.

1. The damage to the human body is different: part of the fresh water comes from groundwater, part of the glacier, part of the freshwater lake, and the groundwater can be directly drunk without harm. Salt water, on the other hand, contains a large amount of inorganic heavy metal salts, which are harmful to the human body when drinking.

2. Different taste: water that is almost unsalted or water that is almost not polluted is fresh water and has no taste; Whereas, saltwater water contains a lot of salt, and the taste is salty and bitter.

3. The storage capacity is not the same: the total water volume on the earth is about 1.4 billion cubic kilometers, of which only fresh water; And the storage of saltwater accounts for 71% of the socks on the planet.

Introduction of freshwater.

The usual drinking water for people is freshwater. The total amount of water on the earth is 1.4 billion cubic kilometers, there is a lot of water on the earth, and the reserves of fresh water only account for the total amount of water in the world, and some of them belong to solid glaciers, which are distributed in the high mountains and the north and south poles that are difficult to use, and some fresh water is buried deep underground, which is difficult to exploit.

Freshwater fish don't count, deep-sea fish do.

Normally, they belong to the seafood category, which are all deep-sea fish, such as grass carp, carp, sea bass, etc., which are freshwater fish. It can't be called seafood, seafood food is not good to say that all kinds of people can eat, some people with allergies or bronchitis, bronchial asthma, try to eat less, so as not to induce allergies and aggravate the condition. Seafood contains rich minerals and proteins, and people with large protein needs can eat more appropriately.