very interesting. i just got done watching a documentary made by killer instincts and they say the cariba are also known as the red belly but the cheap pirahnas u buy in the store are called koshu. i dont have a clue how its spelled but the way he said it thats how u would pronounce it. in the wild other pirahnas from the serra family will come share a meal with the cariba. they showed about 100 cariba feeding on a animal and then came a bunch of irratins to help eat it, They also mentioned that in the wild most pirahna dont get much bigger then ur hand. pretty neat stuff. If ur interested in the video u can puirchase it at www.amazon.com.
