Like humans, fish can have viral infections.
Viruses are microscopic organisms that live and reproduce inside living cells.
CCV potentially can kill a large number of fish but in many cases can be controlled with proper management. Clinical Signs and Diagnosis Early detection of CCV is critical in trying to reduce your losses. Fingerlings infected with CCV usually have a swollen belly and bulging eyes due to an excess of internal fluid. This fluid is often clear to yellowish. CCV, however, can appear similar to other catfish diseases, so it must be detected with proper laboratory testing at a qualified diagnostic laboratory.