The Harm of Rotifers to Adult Fish and Control Methods

In recent years, while providing technical services, the author has found that rotifers are overrunning adult fish ponds in some areas, causing many problems for farmers. This phenomenon is especially serious in some long-established aquaculture areas or places using sewage for aquaculture, and it deserves sufficient attention.

The harm of rotifers to adult fish

The harm of rotifers to adult fish is mainly as follows: rotifers have an extremely strong reproductive rate and will form a dominant population in a short time, eating most of the algae, reducing photosynthesis and weakening oxygen production capacity. At the same time, they also consume a large amount of oxygen, and the result is very likely to cause fish hypoxia, and even cause fish death; second, because they need to be killed frequently, aquaculture costs rise; third, because they are not easy to completely remove from the pond, the pond water is often short of oxygen, affecting fish growth; fourth, after rotifers die, their decay and decomposition will also spoil water quality, affecting fish growth, and even triggering disease and causing fish death.