deevirus deevirus deevirus is a genus of viruses in the realm ribozyviria, containing the single species deevirus actinopterygii. various ray-finned fishes (actinopterygii) serve as its hosts. deevirus virus classification (unranked): virus realm: ribozyviria family: kolmioviridae genus: deevirus synonyms ray-finned fish virus 1 (rffv-1) fhdv