What is the first thing you think of when it comes to a zombie? Is it the traditional brain-eating corpse slowly shuffling its feet? Or maybe you picture a fungus-ridden monster like the creatures featured in the popular video game and HBO show "The Last of Us?" If you said the latter, the creatures featured in that show may not be far from the truth.

It appears a strange fungus and deadly infection is affecting Montana trout.

Reports of "zombie trout" are emerging from one of Montana's most popular trout fishing areas.

According to All That's Interesting

The Big Hole River is one of the top trout fishing regions in the world. But the trout population this year is at its lowest-ever recorded level. State biologists and guides say a disease making the fish resemble zombies is partially to blame.

Residents of Wise River are claiming that they are finding brown trout blind from infection, as well as missing chunks of their gill plates and covered in a strange fungus. The trout are still alive but resemble the walking dead. Or maybe more like the "swimming" dead.

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Governor Giantforte has had tests performed on affected trout, and results showed "no unusual diseases or pathogens." So what is it that is creating these  "zombie trout?"

Residents along the Big Hole River fear that whatever this may be will completely destroy the world-famous fishery. But, what is next? Clearly, whatever is causing this is in the water. So how long until this fungus and infection make the jump to other animals and possibly humans?

LOOK: The states with the most UFO sightings

For each state, we’ve also included details of famous UFO sightings in that state. Of note is that almost three-quarters of all UFO sighting reports in the United States occur between 4 p.m. and midnight, and tend to peak between 9 and 10 p.m. Food for thought next time you're out scoping for alien life. Keep reading to see which states have had the most UFO sightings.

Gallery Credit: Nicole Caldwell & Matt Albasi

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