? Loach is a common animal, which is widely distributed in the world. There are many loaches living in our country. In terms of classification, animals can be divided into vertebrates and invertebrates according to the existence of vertebrae, among which vertebrates are animals with vertebrae inside the body, which are higher than invertebrates. According to this criterion, loaches can be classified as vertebrates because they have vertebrae inside their bodies.
The loach's spine exists inside their body, although it can not be observed from the outside, but it is a very important structure for them. The spine runs through the body of the loach, located in the center of their body, and plays a very important supporting role. If there is no spine structure, or their spine is damaged by accidents, then the loach will not be able to move normally and survive. In addition, there are some spines in the body of loach, which have the same supporting function as the spine.
? As mentioned above, loach has a spine. Vertebrates refer to animals with vertebrae, and loach belongs to one of the vertebrates. Vertebrates are a relatively large category, which is subdivided into many animals, the more common of which are fish, amphibians, reptiles, birds and mammals. Misgurnus anguillicaudatus belongs to the class Osteichthyes, which belongs to fish. Fish, as one of the vertebrates, all have vertebrae. In addition to this common feature, there are some other basic features, such as gill respiration, oviparous reproduction and so on. Misgurnus anguillicaudatus also has a spine, which also meets the basic characteristics of other fish.
