The amazon is filled with all kinds of river monsters and we all know the Piranha is the most famous. But one of the biggest river monsters in the Amazon, and one of my favorites, is the one they call the Arapaima.
Arapaima are these long sleek looking fish that can grow up to 2 and half meters ( or around 8 feet). The record weight this monster is 200 KG or about 440 LBs, but on average they are about half that.
Arapaima are considered to be an ancient fish – scientists estimate they are descendants of fish that date back more than 250 million years.
One of the reasons I think they’ve been so successful at survival are these amazing armor-like scales that cover their body. These scales are super light, but so strong, not even Piranha can bite through them.