What is aquaculture most afraid of? Of course the fish is sick! Light will affect the growth, heavy is a trip dry. So we fish farmers must practice a pair of "fire eyes", timely detect the abnormal behavior of fish, in order to kill the disease in the cradle!
Today, let's talk about some of the biggest signs of fish disease and what to do about it:
Jumping
When a fish jumps out of the water, many people might think it's a sign of their energy. But in fact, if the fish frequently jump, especially accompanied by struggle and weakness, it is likely to be caused by parasites such as fish, fish, and anchor head fleas on the skin and gills of the fish. These parasites make the fish uncomfortable and try to jump away.
Side and side
Edge: Normally, fish swim freely. But if they suddenly like to swim in one direction against the side of the pool (especially carp and grass carp), then you need to watch for parasites, bacterial gill rot, or the water quality is starting to deteriorate.
Lying side: the fish lie alone in the grass nest, the pool side hiding place, and the head and back of the fish are black, and some bodies also have strips or patches of yellow, do not eat, which is a manifestation of tapeworm disease.
Food refusal
Usually grab food grab happy, but now feeding is indifferent, or even do not eat, why? Possible causes: gastroenteritis, parasitic infection, deterioration of water quality, stress reaction, etc. You can stop eating and observe first to see if there is any problem with the water quality. If it's gastroenteritis, try mixing and feeding probiotics.
burst
Fish suddenly like frightened, scurvy around, the possible reasons are: frightened (such as noise, vibration), parasitic infection. If there is no noise, consider whether it is a sign of parasitic gill rot.
Be complacent
Generally around 4-6 in the morning, the fish appears slightly floating head, which is a normal phenomenon. If the start time of floating head is advanced day by day, the number and days of floating head increase. Possible causes are: insufficient dissolved oxygen in water, gill disease, deterioration of water quality and so on.
Pro Tip: What to do?
If farmed fish have the above situation, don't panic! First of all, observe the behavior and body changes of the fish, and preliminarily judge the cause. Secondly, check the water quality indicators, such as pH, dissolved oxygen, ammonia nitrogen, etc., to ensure that the water quality is in the appropriate range. Then, according to the fish's condition to choose the appropriate drug treatment.
Of course, the above are only some common abnormal behaviors, and the specific situation needs to be judged according to actual observation and experience.
Prevention is always better than cure! Usually to strengthen daily management, do the following:
Test the water quality regularly to keep the water fresh.
Scientific feeding, avoid overfeeding.
Regular disinfection to prevent disease.
Choose healthy fry to eliminate disease at the source.