CATDOLL : CATDOLL: Hello, my grass carp has been swimming alone on the shore for many days, and its body is covered with bruises. What disease is it and why? My family has running water. Thank you

1. Hello, my grass carp has been swimming alone on the shore for many days, and its body is covered with bruises. What disease is it and what is the reason? My family has running water. Thank you

Could you provide more detailed symptoms? For example, is the body color darkening? Are the scales falling off? Is the skin bleeding? If you have a photo, it would be better to post it.

2. What fish eat fish fry?

Common ones include horse mouth fish, upturned mouth fish, catfish, and snakehead fish.

3. I want to raise black carp at home. Where can I buy black carp fry?

Where can I buy big croaker fry in Guangdong?

4. I rented a fish pond. Is it risky to raise crucian carp, carp, silver carp and grass carp? Is it more risky to raise fish or fry and water carp? Please help answer this question. Thank you.

The risks of fry and splash are relatively greater. The technical requirements are also higher.

5. What to do if the pH value is high

The pH value is indeed too high. Check if there is anything alkaline nearby. If necessary, you can use probiotics to adjust the water quality. Probiotics are good for adjusting water quality. However, I don’t know if your pH value is so high that it is easy to adjust it down. But this is the first time I’ve seen sulfuric acid used to adjust water quality!

6. The issue of grass carp breeding density

Hello friend, my family used to raise fish.

About one acre can support about 10,000

When the fish weighs about half a pound, it should be divided.