What are the causes of mass death in black carp?

As a common fish species, black carp is raised in fairly large numbers. If you run into a mass die-off while farming them, don't panic first, figure out the cause first. There aren't many things that can cause mass death in black carp, so let's take a look below and see roughly what they are!

1. Water temperature too high

Water is the living environment of fish, and fish are basically intolerant of high temperatures, so when the water temperature rises, black carp will gradually become uncomfortable, and over time they will naturally die in large numbers. Many farmers basically don't consider this problem, but this factor really does exist. In many places the summer temperature will exceed the limit that black carp can tolerate, and this is especially obvious with fry. Just watch for it and cool the water down.

2. Lack of oxygen

Death caused by lack of oxygen is a very common sight, since farmers have more or less run into this situation. Black carp itself grows fairly fast, which makes its demand for oxygen relatively high, and the inflow of fresh water in many ponds is not fast, which means the rate at which oxygen in the water is consumed cannot keep up with the rate at which it is replenished, and in the end the black carp die in large numbers. When farming black carp the density should be appropriately lower, because it can grow to several tens of jin, and if you don't pay attention you may end up raising them for nothing.

3. Water pollution

Many people think black carp is a fish fairly tolerant of pollution, but in fact, even though black carp looks like it is very dirty, its requirements for water quality are not low at all. On top of that, black carp itself is a fish that easily pollutes water quality, and its excrement is also relatively plentiful, so the problem of black carp with regard to water pollution is actually fairly serious. When you find a mass die-off you must consider the problem of high water pollution.

4. Disease outbreak

Disease is even more common. Black carp itself falls ill less often; more often it has been injured, and the wound becomes infected, leading to illness. Moreover, black carp is a species with relatively many infectious diseases, and this is also a cause of mass death from disease in black carp. For such black carp, you can generally determine it by checking whether there are wounds on its body, while some require a dissection to check and see exactly what disease it is.

The above are some of the causes of mass death in black carp. Don't rush to throw away the dead fish, check carefully to see how they died, so that the problem can be solved later.