Seahorses are generally distributed in tropical oceans and live in the same environment as some tropical fish. In terms of class, seahorses are osteichthyes, that is to say, they are a kind of fish, and subdivided into osteichthyes. Of course, from the point of view of appearance, they do not look like fish, from the head, they look more like horses, and because of this characteristic, they are named "seahorses". However, as a fish, there are some obvious characteristics reflected in the seahorse.
Seahorses breathe in the same way as other fish because they use their gills to breathe. In addition, seahorses swim in a similar way to other fish. When we look at fish, they basically swim by swinging their fins; The same is true of seahorses, which can move by swinging their fins, in which the dorsal fin plays a very important role.
Mammals are a kind of vertebrates, but also a relatively higher animal; They are generally viviparous and generally have mammary glands to feed their offspring; Most of them are endotherms; There is usually hair on the body surface. Amphibians are a kind of animal evolved from fish, which can live in both water and land, so they are called amphibians, which are not very many. Fish are completely different from these two kinds of animals, and there is no intersection between them. As mentioned above, seahorses are a kind of organisms of Osteichthyes, belonging to fish, so they are neither mammals nor amphibians.
