Yeah, pretty lame article. Also, the picture (top) they have labelled as pacu are actually cariba... pretty impressive ones at that, especially the one in the foreground.
When piranhas and exodons are about the same size, the mix works really well. I haven't kept p's in over a decade, but I used to have a mixed pygo tank (4 cariba, 2 piraya, 2 ternetzi, 1 regular nat) with exodons (12). It was a really entertaining tank come feeding time. But of course, once my p's starting getting bigger, the exodons started disappearing. I recommend the mix, just be ready to fish out the exodons, if you don't want them all eaten (I know... easier said than done. I just left them, because I didn't want to stress the p's). A lot of people want to grow monster p's, but I wish there was a pygo species that stayed around 4-5". You need a pretty big tank otherwise, to get that feeding frenzy effect with adult pygos (which I didn't have).
At one point, I threw in a small red pacu as food. But he wasn't eaten and eventually grew to 20", before I took him out.
When piranhas and exodons are about the same size, the mix works really well. I haven't kept p's in over a decade, but I used to have a mixed pygo tank (4 cariba, 2 piraya, 2 ternetzi, 1 regular nat) with exodons (12). It was a really entertaining tank come feeding time. But of course, once my p's starting getting bigger, the exodons started disappearing. I recommend the mix, just be ready to fish out the exodons, if you don't want them all eaten (I know... easier said than done. I just left them, because I didn't want to stress the p's). A lot of people want to grow monster p's, but I wish there was a pygo species that stayed around 4-5". You need a pretty big tank otherwise, to get that feeding frenzy effect with adult pygos (which I didn't have).
At one point, I threw in a small red pacu as food. But he wasn't eaten and eventually grew to 20", before I took him out.
