The arowana is a creature that lives at the bottom of the sea, and with the increase in human activities, it has an impact on the environment of the nearby waters, causing the arowana to be frightened.

As an economic fish, the arowana is rich in nutrients such as protein, trace elements and minerals. It is mainly distributed in the waters of the East China Sea and the South China Sea. It is one of the largest spawning grounds in China. ?

What is an arowana?

The arowana, also known as the big arowana, is a carnivorous fish that lives in seawater and has great edible and medicinal value, known as ? ginseng of the sea? The arowana is a group of marine animals, generally living in the middle and upper layers of the ocean, to the benthic plankton and other food, the arowana is also an omnivore, very much love to eat some small fish and shrimp. It also has a lot of small fish and shrimp on it, so the otterfish is also known as the small shrimp fish.

Reasons for the mass emergence of the otterfish?

While there are many fish in our waters, they seldom have large-scale collective anomalies, especially those like the otterfish. In fact, the cause of the large-scale emergence of the arowana is largely related to the environment. Generally speaking, if the water temperature is too low and the salinity of seawater is high, it will affect the spawning habits and living habits of the arowana. And if the seawater temperature is too high, it will make the spawning and survival temperature of the otterfish too low, which is why a large number of otterfish will appear collectively. In addition, in the bay area, during high tide, there are even more crabs and oarheads, because they have a strong phototropic behavior. A reddish tide will cause the crappies to surface and congregate as they are frightened.

Effects of human activities

With the increase of human activities, the transitional use of phosphates, calcium salts, sulfates, nitrates and other substances on the nearby waters leads to the death of fish in large areas, which has a great impact on the growth and reproduction of fish. And in the ocean, this chemical is one of the main components, once it is enriched in the water body will affect the number of fish survival. This is what is affecting the large collective migration of alewives.