How much virus is in the slime coat of fish? Does fish has venom that stunts its prey? Is viral infections and aquaculture, including the home aquarium, correlated? Does nibbling fish and nasty fish bites give you the flu?
Until, proven scientifically, no, no, no, and no. If virus is found in the slime coat of any aquatic animals, that will be good news. Virus can then be cultured.