The seahorse is a creature that lives in the sea. Their appearance is quite strange, their head is more like a horse, hence the name, their tail is more like a monkey's tail, can bend freely, and even make them entangled in the surrounding plants. It can be seen that they do not look like fish on the surface, and the most obvious characteristics of fish fins are not obvious in the seahorse, because although seahorses also have fins, they are very small and transparent. But in terms of classification, seahorses are osteichthyes, that is to say, they are a kind of bony fish.
As mentioned above, the appearance of seahorses is very different from that of fish, and they are named after "horses", but they belong to fish in terms of category, and they are a kind of bony fish. This is because, although they look like horses, they have some essential characteristics that are the same as fish.
For example, fish use gills to breathe, and seahorses use gills to breathe, so if you look at them closely, you can see the signs of their breathing. In addition, fish have fins and use them to swim. Seahorses also have fins, and although their fins are small and transparent, they can be observed if you look closely. Seahorses have dorsal fins, pectoral fins and so on. Seahorses also need their fins to swim. When they move, the speed of their fins is very fast, especially their tail fin.
