Rainbow trout were immersion exposed to 1×104 PFU/mL IHNV pre-incubated with 0–10 μM JL122 for 15 min exposed to ambient room lighting. Each group of 8 fish were left in batch for 12 h, then separated into individual beakers for a total of 72 h post-exposure. Similarly, fathead minnows and largemouth bass were immersion exposed to 1×104 PFU/mL VHSV pre-incubated with 0–10 μM JL122 for 15 minutes and held for 72 h post-exposure. Fish survival is shown, and the few mortalities are discussed in the text.