Serrasalmus Compressus, prolly named after the shape of its body, though many piranhas share that, it also belongs to the carnivorous Serrasalmidae family of piranha fish and genus type is serrasalmus, known for having a strong bite and predatory behaviour. Wouldnt want to try and hand fed this one if it has not eaten for 3 days. In fact, when handeling another piranha species it bit a chunk out of my fingers when i was convinced i could just catch it with my aquarium net, first the net then my finger. And it was a cautionary bite, not to eat but to show it will not be fooled around with.