1, the anchor head disease [diagnosis] the pathogen is anchor head, fish, fish can be parasitic. The body surface develops erythema due to inflammation and congestion. In particular, the most serious damage to fish species, a 5 cm juvenile, parasites of 2 parasites on the fish body can cause death. [Treatment]: Clean the pond with quicklime, dip with potassium permanganate solution or dip insects.
2. Hydromycosis [Diagnosis] Fish eggs infected with water mold have hyphae on the outside of the egg membrane and appear as plush. In case of sick fish infected with aquatic molds, the surface of the diseased fish and the sting of the dorsal fins of the diseased fish are white flocs. Diseased fish swimming disorders, loss of appetite, and finally thin and dead. [Treatment] Maintain good waters. Injured fish are smeared with special agents.
3, ciliate disease [diagnosis] The pathogens are ciliates. From the first day of fry hatching, to a period of 5 to 8 cm, the water temperature is 20°C to 27°C. The fish's head is grayish white, the mouth is open, it cannot be closed, and swimming is lost in balance and sinks in the water. Tumble, then die. The disease spreads extremely fast and is most detrimental to salmonids. [Treatment]: Sprinkle with copper sulfate and ferrous sulfate in the whole pool.
4. Sword scorpion [diagnosis] Sword scorpion is an enemy of squid eggs. In its incubating water, sword leeches can cause a great deal of hypoxia or bite the eggs of the salmon and young fish fry in the first film, resulting in death. [Treatment] The inlet of the hatching tank is filtered with a 60-mesh gauze net to reduce the entry of adult scorpion larvae, or sprinkle with dichlorvos.
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