Weapon in Newly Discovered Fish

At the University of Kansas, a new species of stonefish has recently been discovered." As if their deadly venom and spiny exteriors weren't enough, scientists at the University of Kansas have found that stonefish also have a hidden switchblade on their face that they can flick out whenever they feel like they're in danger." They use this whenever they feel like they are in danger, or under any kind of threat. This could change the classification of over 134 different kinds of fish. These types of fish are mostly in coastal waters, but with all of the new discoveries recently made by researchers, who knows if they reside elsewhere as well?

https://www.cnn.com/videos/world/2018/04/13/stonefish-switchblade-lachrymal-saber-orig.cnn