Red sea bream iridovirus

Also known as: RSIV

Red sea bream iridovirus (RSIV) is a member of the family Iridoviridae and causes systemic infections in marine fish, particularly species in aquaculture like red sea bream, grouper, and sea bass. The virus is responsible for high mortality rates, especially in warmer water conditions. Affected fish often show lethargy, darkened coloration, anemia, and splenomegaly. RSIV has a significant impact on the aquaculture industry across Asia.

Distribution: East and Southeast Asia
Hosts: Marine finfish, including red sea bream, grouper, and sea bass
Detection Methods: PCR – unspecified; histopathology
Target Tissue: Spleen, kidney, liver