@article{article7675908f,
title   = {Differential cropping of the caudal fin lobes of prey fishes by the piranha , serrasalmus spilopleura kner},
author = {Northcote, T G and Northcote, R G and Arcifa, M S},
year = {1986},
doi = {10.1007/bf00014215},
journal   = {Hydrobiologia}
}