The fish live in water and rely on the dissolved oxygen in the water. The large number of pathogenic organisms present in the water can easily infect the cockroaches. The incidence of earthworms is very high. Therefore, there is a saying that "fish farming should first cultivate water, and cure the disease first." There are many kinds of rickets in fish. In order to accurately diagnose and rationally use drugs, rickets are classified into the following six types:
First, bacterial rickets
1. Symptoms Disease The fish's sputum has increased mucus, darkened, and covered with dirt. Severe silk decayed to expose the bones.
2. Pathogenic water quality adversely stimulates the axillary tissue, causing the fish to be infected by Myxococcus, columnar bacteria, or other bacteria.
3. Control methods 1 Adjust water quality and eliminate germs. One is to constantly add new water; the second is to use super bacteria net A type to treat old water and kill pathogens; the third is to use an aerator to mix water to increase the exchange of water in the upper and lower layers. 2 The bleaching powder or other chlorine-containing preparations can be used for prevention and control. 3 Feed bactericidal baits or feed them with three yellow powders and antibiotics.
Second, fungal rickets
1. Symptoms: The silk is dark and the hyphae develop. Occurs in ponds with water quality aging in hot seasons.
2. Pathogenic fungus mold.
3. Control methods Clear the pond thoroughly with quick lime. The sick fish need to be destroyed. The thioether sand, dithiomethane or chlorine dioxide has a certain inhibitory effect on the mold, and the diseased fish pond needs a lot of water changes to improve the water quality.
Third, protozoal rickets
1. Symptoms In early spring, due to the weak constitution of overwintering fish and the relatively dirty water quality, fish species are often caused. The spring fish species often wanders around the pool or down the wind, and most of the microscopic examinations are parasitoids, caterpillars and other parasites. When the fry pool occurs in summer, the common diseased fish is floating on the fine weather clusters, which resembles an oxygen-depleted floating head. When it is domesticated, it does not feed on the feed table or it will be dispersed for a while and continue to float on the water. The appetite is obviously reduced and the growth is slow. Lifting the lid of the diseased fish shows that tissue hyperplasia and mucus increase.
2. Pathogens are caused by a large number of parasites such as trichophae, worms, and oblique worms.
3. Treatment 1 When the autumn piece enters the wintering pool or the spring slice pool, the fish is soaked with a comprehensive soaking agent. 2 Potassium sulfate plus potassium permanganate (5:2) 0.5ppm Quanchiposa. 3 Sprinkle 0.7ppm Quantitative with copper sulfate plus ferrous sulfate (5:2).
Four, trematode rickets
1. Symptoms The diseased fish is irritated and often jumps out of the water, or “blasts†during the course of feeding. The fishes are swollen and adhering.
2. Pathogens are caused by a large number of parasitoids such as ringworms, third-generation worms, and Chinese sturgeons, often accompanied by bacterial rot disease.
3. Treatment 1 Trichlorfon 0.5 to 1ppm Quanchiposa. 2 Hyperbacterial net type A 0.3～0.4ppm Quanchiposa, can also use bleach, chlorine killing, chlorine dioxide and other fungicides Quanchiposa to prevent secondary bacterial infections. 3 Inject some new water every other day after treatment to facilitate the recovery of fish appetite.
V. Hemorrhagic rickets (vessel neoplasms)
Due to poor water quality, large amounts of cyanobacteria, excessive ammonia levels in water, chemical pollution, insecticides and other pesticides stimulate the production of organic microscopic angiopathy, forming aneurysms, and can be identified with a microscope.
Control methods: 1 a lot of water or water quality improvement agent to regulate water quality. 2 Chlorine preparations are splashed in the whole tank to prevent secondary bacterial infections.
Six, nutritional rickets
Symptoms: Symptoms are crooked, and the small pieces are crooked and atrophied. The alignment is irregular.
2. The cause of the disease is due to the lack of pantothenic acid or other nutritional imbalances in the feed, which reduces the immunity of the fish and causes bacterial infections. The parasite invades.
3. Treatment 1 A reasonable preparation of feed, so that amino acids, unsaturated fatty acids, calcium and phosphorus, vitamins and trace elements and a number of nutritional indicators balance. Not one-sided pursuit of high protein, high nutrition, maintaining fish health.
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