CATDOLL : CATDOLL:What are freshwater fish?

1. What is freshwater fish?

Generally speaking, freshwater fish refers to fish that live in freshwater with a salinity of 0.3%. There are more than 26,000 known fish species in the world, and more than 8,600 of them are freshwater fish. In China, there are more than 1,000 known species. There are many types of freshwater fish, which can be divided into primary, secondary, and peripheral freshwater fish according to the salt concentration in the water; according to the classification of Chinese freshwater fish, they can be divided into soft fish, lower fish, cartilaginous and hard-scaled fish, bony fish, and teleost fish. Teleost fish are the most common, largest, and most prosperous fish in my country.

2. What are the freshwater fish?

Crucian carp, bighead carp, whitefish, carp, perch, barbel, long-spined fish, pond carp, eel, puffer fish, river eel, loach, willow fish, tiger fish, minnow, goldfish, koi, grass carp, silver carp, catfish, black fish, silverfish, whitewater fish, sturgeon, knife fish, etc.

3. How do freshwater fish become marine fish?

Fresh water (a basin), set as A

Seawater (a basin), set as B

Fish (one), set to C

Then, AB = freshwater fish

BC = Marine fish

4. Are there many freshwater fish in Harbin?

Freshwater fish resources are also relatively abundant. The Songhua River and its tributaries flowing through Harbin, the swamps and reservoirs on both sides of the river have more than 40 species of freshwater fish with edible value, including Heilongjiang carp, silver crucian carp, pike, croaker, Mongolian red bream, Songhua River red bream, redfin bream, bream, mandarin fish, catfish, etc.