These Were The Real River Monsters of Earth

The freshwaters of Earth today may seem like a scary place to some individuals. Afterall, depending on where you live, you may have to worry about sharks, alligators, or crocodiles when swimming in a river. However, those guys are all chumps, when compared to the real river monsters, the Rhizodonts, a group of giant predatorial fish that terrorized the planet over 300 million years ago and also became the largest freshwater fish, the Earth has ever seen.

Thumbnail art:
Joschua Knüppe

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Music:
Intuit256 by Kevin MacLeod is licensed under a Creative Commons Attribution 4.0 license. https://creativecommons.org/licenses/by/4.0/

Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100193

Artist: http://incompetech.com/