It has vertical stripes like a redfin, but markings in young fish rarely match adults. I hear chains have a vertical line under their eye, and redfins an angled one. The image in the photo tank looks angled, the one in the net looks vertical.
Apparently redfins have a shorter bulldog snout, but young pickerel have different snouts than adults.
![Posted Image](http://gallery.nanfa.org/d/48527-4/NR+pickerel+1.jpg)
![Posted Image](http://gallery.nanfa.org/d/48466-6/NR+pickerel+2.jpg)
Regardless, small pickerel are the cutest little fellows who grow into big, voracious, scary looking, predators.