Slate-colored Hawk 2
Image # 1D2_05704
Amazon River
Canon 100-400L/f4.5-5.6 IS and 1.4x II Teleconverter at 200 mm
ISO 500, f/8, 1/1000 second
Manual Exposure
Handheld (possibly with Monopod)
You can see the Piranha being grasped in the talons of the left foot of the Hawk in the 2nd shot from this series I'm including here, also showing the wooden stick they put through its gills to keep it afloat.