What is this catfish?

The name "Silurus" belongs to Silurus of Silurus subfamily, and it is a new finfish in the radial fin net, commonly known as Silurus and Silurus Balang. The front of the posture is thick and round, the tail is flat and the head is wide and flat. This kiss is short, wide and round. Two pairs of nostrils, big mouth cracked, chin slightly protruding. Young fish have three pairs of whiskers, but adult fish degenerate into two pairs. The maxillary beard is slightly longer than the head, and the mandibular beard is 1/3 ~ 1/5 of the maxillary beard. Usually, people only notice 1 pairs of beards, and they often mistake catfish for having only two beards. Catfish is naked without scales, with smooth skin and developed mucus. The dorsal fin is short, with only 5 soft bands; The gluteal fin is long and connected with the caudal fin at the back, with 70-85 soft bands; The pectoral fin has serrated hard spines and 12- 14 soft strips. The body is dark gray or grayish yellow, the back is grayish black, the abdomen is white, and there are irregular white spots or inconspicuous markings on the side. It is a primary freshwater fish, usually very small, rarely exceeding 65,438+0 kg. Mainly living in still water or slow water with aquatic plants. It is a carnivorous fish, fierce and greedy, feeding on shrimp, small fish and other invertebrates. The number of native catfish is small, difficult to catch and extremely delicious, so it is very rare.

Silurus beardus

Catfish with beard is a common catfish in the market. In fact, it is similar in size to the catfish mentioned in the previous paragraph, with a smooth and scaleless head and a flat beard. The most typical difference is its dorsal fin, which has a long base and 55-63 soft bands. The gluteal fin has the same shape as the dorsal fin, and its soft strip is 39-46, which is not connected with the caudal fin. In addition, it has four pairs of whiskers, that is, we often say that it has eight whiskers, a pair of nose whiskers and a pair of chin whiskers, all of which are relatively short; A pair must be longer up and down. Usually black, it inhabits muddy water bodies such as rivers, ditches, lakes, swamps and rice fields. It has a wide range of feeding habits, not only preying on small fish and shrimp, but also eating rotten animal and plant debris. Catfish with beard is very different from catfish with strong earthy smell, so many people abandon it and the price is relatively low.

Silurus meridionalis

Also known as southern catfish, it is a common delicious catfish, which should be the catfish that the squad leader often catches. Silurus meridionalis and local catfish belong to Silurus meridionalis. The scientific name is Silurus meridionalis, with 2 pairs of whiskers for adult fish and 3 pairs of whiskers for juvenile fish; The most obvious difference between catfish and catfish is that the inner side of pectoral fin is smooth, while the latter has sawtooth, which is easy to distinguish by hand. In addition, its common individual weight is about 2 ~ 5 kg, and the largest individual can reach more than 30 kg. Silurus meridionalis is a fierce carnivorous fish, which mainly feeds on fish, aquatic insects and rats. Most catfish restaurants use catfish with big mouths. Its meat is tender and delicious, and it is one of the advanced fish species respected by the people in the producing areas.

Wujiang fish

Wujiang fish actually refers to all kinds of wild fish growing in Wujiang River, and is not a unique fish. For example, the Wujiang fish on the menu of a small restaurant is actually carp and grass carp. In the southwest, Wujiang fish is sought after by diners, but it is actually a wild catfish in Wujiang. However, most restaurants use artificially raised catfish, and some restaurants use other fish to make up for it, which is the so-called Jiangtuan, which is more useful for the bearded catfish.

Jiangtuan

Long snooker, named Leiocassis longirostris, is a kind of Silurus, commonly known as carp, Jiangtuan, flying fish and fat king fish. It is long, snout-shaped, and obviously protrudes forward. It must be four pairs, the small one. Scale-free, dorsal fin and pectoral fin are serrated at the posterior edge of hard spine, lipid fin is thick, and caudal fin is deeply bifurcated. The body color is pink, the back is slightly gray, the abdomen is white, and the fins are gray and black. Long snooker is also a carnivorous fish. Its main food is small fish and aquatic insects, which grows rapidly and is the largest fish of its kind, with the largest individual reaching 15 kg, and the most common fish is 2-4 kg. Its meat is tender and delicious, rich in fat and without thorns. Protein content 13.7%, fat 4.7%, known as the top grade of freshwater edible fish. The most beautiful thing about this fish is its soft belly. Moreover, its swim bladder is particularly thick, and it is a valuable fish belly after drying. Silver carp's dorsal fin spines and pectoral fin spines have poisonous glands, which are highly toxic to freshwater stickleback. After the fish is stabbed, it will immediately produce severe pain and burning sensation. The wound will be punctured, torn, locally bleeding and swollen, and in some cases it will cause fever. The affected area will be painful and itchy for half an hour to 1 hour. It can be seen that the appearance of Jiangtuan is obviously different from that of catfish. As long as you remember its typical characteristics, it is easy to distinguish it.

In addition, the delicious and tender diced yellow pepper is actually catfish, but it belongs to the genus Pelteobagrus, with as many as 14 species. The whole Silurian system is divided into 34 families, 4 18 genera and 244 1 species, and the number is extremely complicated.

As for silver carp, it is completely different from catfish. It is one of the four major fishes "green grass, silver carp and bighead carp", belonging to the genus Silver Carp, whose scientific name is Silver Carp, also known as Silver Carp, Silver Carp and Edge Fish. It has silvery scales, gray fins, flat sides, a wide head and mouth, and feeds on phytoplankton. The biggest difference between catfish and catfish in taste is that there are many small thorns, which are hard to eat.

You see, yours belongs to that kind.