CATDOLL : CATDOLL: Why did a large number of silver carp get injured and die when 5,000 kilograms of silver carp were put into the pond shrimp net?

1. Why did a large number of silver carp get injured and die when 5,000 kilograms of silver carp were put into the pond shrimp net?

The main reasons for the death of lobsters are: 1. Too much aquatic plants. This year, most of the ponds where crayfish died had a lot of Elodea. Summer is the dormant period of Elodea, and the roots are shed quickly. In places with high density, Elodea dies seriously, the water body deteriorates, the H2S in the water is high, and harmful gases such as methane and biogas are generated quickly, causing crayfish to be poisoned and die. 2. Too much algae. Due to the large...

2. Is the white spot on the goldfish a sign of illness???

This is the most common disease in fish - white spot disease (commonly known as cold), which is mainly caused by the large change in water temperature that exceeds the fish's ability to adapt. The course of this disease is long. It does not obviously affect the fish in the first few days. Later, the fish becomes dull and loses appetite, the number of flocculent white spots on the body increases, and finally dies. White spots are small insects that attach to the fish.

Don’t worry if your fish has this disease. You can use medicine - "White Spot Cleaner" or "Malachite Green", which are sold in fish markets, and the specific usage instructions are also on the packaging.

But the best cure is never medication, everyone knows this. I have been raising fish for more than ten years, and white spots are not uncommon. Here is the best natural treatment: raise the water temperature of the fish to above 28 degrees, the white spots will disappear automatically in a few hours, and then sprinkle a little salt in the fish tank (general fish experts will also add a little salt when they have nothing to do). The fish will be fine. Some people with good physiques will recover automatically without any treatment measures.

3. Ask about fish disease prevention and control

I don't know what the disease is called specifically. If I'm not mistaken, your situation usually occurs when the fish is half grown. It is usually difficult to cure fish that have symptoms. But it can be prevented. Generally, copper sulfate is sprayed on the water body for disinfection about an hour after feeding. The standard is 0.7 PPM. If your water is flowing, the dosage can be slightly increased.