There are three main biological factors that lead to the death of ornamental fish, namely pathogens, algae, and enemies. These three categories are divided into many. What kind of harm will it cause to ornamental fish? Come and learn with me.

Kingman Long

resulting in There are three main biological factors for the death of ornamental fish:

1. The pathogens of ornamental fish include fungi, bacteria, viruses, protozoa and so on. These pathogens are the main culprits that affect the health of ornamental fish. In fish, the greater the number of pathogens, the more obvious the symptoms of fish disease, which can directly lead to a large number of fish deaths in severe cases. The infectivity of fish disease pathogens is closely related to the number of pathogens settled in the host, multiplied and excreted from the host. The deterioration of water conditions is conducive to the growth and reproduction of parasites, and its infectious ability is stronger, and its pathogenic effect on ornamental fish is also obvious. It is not conducive to the growth and reproduction of parasites if the use of drugs to kill or ecological methods to inhibit the activity of pathogens is used to reduce or eliminate pathogens, such as regular disinfection with quicklime, or adding nitrifying bacteria to increase dissolved oxygen, purify water quality and other ecological methods to treat the water environment. , the pathogenic effect on ornamental fish is significantly reduced, and the chance of fish disease occurrence is reduced. Therefore, cut off the way for pathogens to enter the aquaculture water, and carry out ecological control, drug control and immune control in a targeted manner according to the infectivity and virulence characteristics of the pathogens of ornamental fish, and control the pathogens below the level that does not harm the ornamental fish. Watch the occurrence of fish diseases.

2. Some algae, such as dinoflagellates, algae, etc., have a direct impact on ornamental fish. Aquatic algae often entangle ornamental fish juveniles and cause death; while dinoflagellate acidophilus can cause powdery disease in ornamental fish.

3. The main enemies of ornamental fish are rats, snakes, birds, frogs, ferocious fish, aquatic insects, leeches, green mud moss, etc. These natural enemies, on the one hand, directly swallow ornamental fish and cause losses, on the other hand, they have become the host or transmission route of some ornamental fish parasites. For example, gulls can transmit double fluke disease to other ornamental fish.