The horse ponytail is known by a variety of popular names, is slightly cylindrical, and is also known as a stickleback. The horse pike has a pointed, needle-shaped mouth and is also known as the needlefish. The horse mackerel is mostly found in the western North Pacific Ocean. This fish is unique in its ability to adapt to different environments, being able to migrate and reproduce between saltwater and freshwater. It plays an important role in the ecosystem and is important for maintaining biodiversity and ecological balance.