sera guide - Healthy pond fish

7 Observation Firm, globular cysts measuring 0.5 to 1 mm on the skin and the fins (mucous membrane cells strongly enlarged by the virus). Treatment: page 24 Treatment: page 24 Observation Gelatinous, pale to pink colored skin elevations shaped round to oval, sized between 5 and 10 mm, form on the body surface. Mostly occurs on Koi in spring. Diagnosis: Carp pox Diagnosis: Lymphocystis 2.1 Diseases caused by viruses Lymphocystis Koi with carp pox