sera guide - Healthy pond fish

25 6.1 Treating virus caused diseases In case spring viremia should break out in spite of the preventive measures you can suppress the further spreading of viruses with sera pond cyprinopur and combat secondary bacterial infections with sera baktopur direct or sera KOI BAKTO TABS. Fish with a bloated belly can often not be saved and excrete large amounts of viruses and bacteria. You should therefore separate them from the other fish during the treatment and put them into a separate treatment tank, wherever possible. Rhabdovirus carpio, spring viremia Diagnosis: page 8 Often accompanied by a secondary bacte- rial infection. Often manifests itself as “infectious dropsy” in final stages (however, dropsy may also occur as a symptom of many other disease causes that need not be linked to spring viremia). Spring viremia of cyprinids is an acute, con- tagious virus infection. It gets into a pond via newly added, infected fish. Fish that have survived the disease become immune but remain latent virus transmitters for their entire life. The viruses multiply only slowly at low tem- peratures. They only begin to multiply strongly when temperatures rise in spring. The fish, being weakened by the exhausting winter, are now particularly susceptible for this infection. Spring viremia becomes acute at temperatures between 15 and 17°C (59 and 63°F). Many or even all fish may die quickly, sometimes within a week, if it is not treated. The disease subsides at water tem- peratures above 20°C (68°F), and no deaths occur above 25°C (77°F). It is therefore par- ticularly advisable to raise the temperature in a quarantine tank. However, the fish must not simply be put back into the cold pond water after they survived the disease. Maintain an appropriately long adaptation phase during which you lower the temper- ature again stepwise (lower by not more than 1°C (1.8°F) per day), or wait until pond temperatures have accordingly risen in the course of spring or summer. Prevention is particularly important in case of virus diseases. Using high quality food rich in vitamins strengthens the immune sys- tem of the fish throughout the year. sera KOI Professional Spring/Autumn Food and sera KOI Professional Spirulina Color Food are ideally suited during spring and for conditioning the fish in autumn. You should additionally add sera KOI MULTIVITAMIN during this dangerous time and carefully maintain good water quality and sufficient oxygen supply.