CATDOLL : CATDOLL: Is the cutlassfish a fish? Are the oarfish and cutlassfish both fish of the suborder Cutlassfish?

1. Is hairtail a fish?

Hairtail is a fish, and also a shallow sea fish, usually living in the water 60 to 100 meters below the surface. Usually during the day, it moves in the water depth of about 60 meters, and at night, it moves in the water depth of about 100 meters.

In winter, in order to avoid the cold, it will move in the deep sea. Its main distribution places are in the Indian Ocean and other places. Now it can be seen in China's South China Sea and the Yellow Sea. It can be said to be one of the four most common seafoods.

2. Are oarfish and cutlassfish both fish of the suborder Trialeidae?

Oarfish and cutlassfish are not the same species. They are distributed in different areas, have different tastes and appearances. Oarfish, also known as Brunhilde, is a species of the family Oarfish in the order Ophiopodidae of the order Lunaphidae of the class Actinopterygii. Cutlassfish are quite common in life and belong to the class Osteichthyes of the order Perciformes of the class Osteichthyes in the subphylum Vertebrata under the phylum Chordata.

Hairtail is also known as knife fish, skirt fish, fat hairtail, and is common in coastal areas such as Qingdao and Rizhao. The body of the hairtail is flat and ribbon-like, silver-gray in color, with light gray dorsal and pectoral fins and very small spots, and a black tail. Hairtail is a very ferocious fish species, because the hairtail has a pointed head and a large mouth, and its height is twice the length of its head, with a total length of about 1 meter.

The oarfish is completely different from the common cutlassfish. It is the longest bony fish in the ocean. Its dorsal fin is also red and very long. It is rarely seen in the sea or in the water. The oarfish is a large fish and is generally hard to come by. The oarfish can be up to 9 meters long, as tall as a two-story building, and is mainly found in tropical deep seas.

3. Can I bring fish on the train?

Yes, as long as it is not live seafood or poultry

4. Can fish be brought on high-speed trains?

Live fish cannot be brought on high-speed trains. According to the Railway Passenger Transportation Regulations, when passengers are riding on high-speed trains, animals and items that are harmful to public health (including items with foul odors) are not allowed to be brought into the train. Therefore, whether it is pets or seafood, they cannot be brought on high-speed trains.

When taking the high-speed rail, you can bring processed dried seafood or frozen and sealed seafood, but you cannot bring some fresh seafood. Those who violate the regulations will be punished accordingly.

5. What words can be used to describe tropical fish?

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1. Grass carp

These 31 polymorphic primers and the 93 polymorphic loci detected preliminarily provide a reliable analytical index system for the polymorphism analysis of grass carp genome.

Explanation: It has a cylindrical body, is slightly green, lives in fresh water, and eats aquatic plants. It is also called huàn.

2. Houttuynia cordata

Objective: To study the characteristic spectrum of volatile oil components of fresh Houttuynia cordata from Yichang, and to provide a simple and quick method for evaluating the quality of Houttuynia cordata resources in the region.

Explanation: See 〖Jícái〗.

3. Cuttlefish

At noon, we arrived in Pomos, found a ventilated seat in the restaurant, and enjoyed a seafood feast - clams, octopus, cuttlefish, lobster and crab.

6. Is hairtail a deep-sea fish?

no.

Hairtail is not a deep-sea fish strictly speaking, but a migratory fish, generally living in the coastal waters at a depth of 20-40 meters. Hairtail is mainly distributed in the western Pacific Ocean and the Indian Ocean, as well as in the coastal provinces of China, with a relatively wide distribution range. Hairtail is afraid of strong sunlight during the day, has the habit of "hiding during the day and moving at night", and has poor swimming ability, so they have the habit of moving vertically day and night, living in the middle and lower water layers during the day and rising to the surface at night.

7. Is a shark a fish?

Yes, sharks belong to cartilaginous fish. Sharks only account for 1% of the total number of fish. The size of sharks is not much different from that of other fish, but their size is more suitable for swimming quickly in the water. It is well known that sharks belong to fish. Fish are oviparous animals like birds, but sharks are an exception. They are "viviparous". Shark eggs will stay in the mother shark's body after they are laid. They will not leave the mother's body through the mother shark's birth canal until the young sharks mature and break out of the shell. Therefore, sharks hatch eggs in their bodies. Sharks belong to cartilaginous fish. The skeletons of the body and head are made of cartilage. Unlike other fish, the skeletons are made of hard bones.

8. Are fish animals?

Answer: Fish are animals. Solution: Fish are the most primitive vertebrate type of animals. There are about 32,000 species of fish in the world. Fish live in water, distributed in oceans and freshwater. Two-thirds of them live in the ocean, and the rest live in freshwater. The classification is:

Phylum Chordata: , cyclostomes, armor, shields, cartilage, ray-finned, spiny fish, fleshy finned, etc. Species include: seahorses, pipefish, sharks, perch, grouper, salmon, tuna, etc. Freshwater fish include crucian carp, carp, snakehead, silver carp, bighead carp, tiger barb, yellow bone, angelfish, etc.

9. Is pufferfish a fish?

Pufferfish is not a fish. Pufferfish is a general term for animals of the superfamily Porpoise, order Cetacea, class Mammalia. The superfamily Porpoise has four existing species that live in freshwater rivers and estuaries: three of them live in freshwater rivers; and the other species, the Plata river dolphin, lives in saltwater estuaries and near-shore oceans. However, in scientific classification, it is still classified as a superfamily Porpoise rather than a Delphinidae. Pufferfish are larger than dolphins, and can grow up to 3 meters in length. Unlike dolphins, their heads can rotate 90 degrees, which gives them an advantage in complex river channels.

10. Are crocodiles fish?

Not a fish.

Because crocodiles are reptiles, advanced reptiles, and they breathe with lungs.

Crocodiles belong to the class of vertebrate reptiles and are the only extant descendants of dinosaurs. They can swim in water and crawl on land. They are fat and strong, and are called the "king of reptiles". They breathe with lungs. Due to the structure of the amino acid chain in their bodies, they have a strong oxygen supply and storage capacity, so they have the characteristics of longevity. The average lifespan of a crocodile is up to 150 years. According to archaeological discoveries, the largest crocodile is 12 meters long and weighs about 10 tons, but most species of crocodiles have an average body length of about 6 meters and weigh about 1 ton. They mainly feed on fish, waterfowl, hares, frogs, etc., and are carnivorous animals. They have strong jaws, many conical teeth, short legs, claws, and webbed toes. Their tails are long and heavy, and their skin is thick and covered with scales.

The crocodile has two eyes on the top of its head. In addition to its eyelids, it also has a transparent nictitating membrane, which enables it to adapt to the water environment. Its long and thick tail is not only a "rudder" when swimming, but also a tool for hunting and a weapon to defend against enemies.

Crocodiles usually like to live in the wet areas of lakes and swamps or hills and mountain streams with weeds and grass. Crocodiles often give people the illusion of being slow in action. In fact, crocodiles have extremely sensitive hearing and vision, and all parts of their bodies are very flexible.