Watch this freaky-mouthed fish!

Redditor Random_Average_Human recently posted a short video—in the r/WTF subreddit, naturally—of a fish with a very weird mouth. Turns out it's a sturgeon. Steven Maier of Great Lakes Echo explains:

The jawbones of these ancient fish are detached from their skulls, allowing them to vacuum up food by throwing their mouths open suddenly. — Read the rest