Need to mask the fish.
https://twitter.com/ClownWorld_/status/1715808291899498858
MARION, Va. – Officials had to euthanize 40,000 trout in Virginia to prevent the spread of whirling disease, the Virginia Department of Wildlife Resources announced Thursday.
Whirling disease is caused by a microscopic parasite and leads to skeletal deformities in fish from the trout and salmon family, according to the DWR.
https://nypost.com/2023/10/21/40000-trout-euthanized-in-virginia-to-prevent-fish-pandemic/