Jau

The Jau (Zungaro zungaro) are the monster ‘Sumo wrestlers’ of the Amazon are every bit as tough as their cousins, the Lau and Redtail Cats, except they tend to live in well-oxygenated water and nearly always found in rocky areas below falls and rapids. They usually come out of their caves, take the bait and instantly run for back to their rocky haunts, often cutting lines on the sharp rocks. They can reach over 180lbs in some rivers, and average 80lbs here.