I know of a guy who had a 8" jag kill a rbp by ramming it into the side of a rock. He said the jag hit it so hard that it bled through its eyes and died almost instantly.
aquascapeonline.com is where I buy mine from. Pedro is awesome!!! He has great prices, gets you the cheapest shipping price, and packages the fish VERY, VERY good. Good luck. Any other questions?
In every instance I've heard, pygocentrus (like your Pygocentrus nattereri) will just not mix with any other species. When they are hungry they can be pretty vicious, but for the most part they are timid fish with heavy machinery for ripping flesh.
If they were hungry enough- Most of the stories of people being eaten/harmed by p's were in the wild after the rainy season was over and the P (in dyslexic and have problems spelling so plz forgive me) were stranded in a pool of water. They'd eaten everything elese so whenever any new thing came into the water it was a feeding frenzy
