There is red blood on the tail of the fish is a parasite, called uterine nematode. This organism is mainly parasitic in the tail or scales of freshwater fish, carp and crucian carp are widespread, and fish friction with each other, may also be infectious. However, it is only harmful to fish and does not infect humans, so don't worry too much.
1, change the water: fish tail infected with parasites, the first thing to do is to change the water. In peacetime, the situation of water exchange is different, at this time, water exchange should be frequent, basically once or twice a day, so as to improve water quality as soon as possible and provide a good growth environment. The water should be changed with tap water, which needs to be dried for several days in advance.
2. Heating up: In addition to changing the water, what needs to be done is to raise the water temperature. Compared with the usual water temperature, this time can be increased by 1-2 degrees Celsius. For fish, higher water temperature can promote its metabolism, discharge bad things from the body, but also stimulate their own immunity, thus playing a recovery effect.
3. Adding salt: After changing the water and heating up, the next thing to do is to add salt. Generally, the salinity should be kept at about three to five thousandths. Too high salinity is not conducive to the health of fish. It should be noted that special sea salt must be used, not edible salt, especially iodized salt.
4. Medicated bath: For the fish in serious condition, it is impossible to solve the problem only by changing the water, raising the temperature, and adding the old three kinds of salt. It is necessary to take a medicated bath. Select some medicines with the effect of killing insects. After dissolving them in the water, put the fish in it and soak them. Generally, it is enough to wash them for 10-30 minutes.
