This csi screencap contains
arenque atlántico, clupea harengus harengus, and arenques atlánticos.
There might also be
arenque, clupea harangus, arenque clupea harangus, sardina, sardinops caerulea, sardina pacífica, and sardina del pacífico sardinops caerulea.
Nick's case of a deceased skydiver takes an interesting turn when Catherine discovers there may be a connection between the skydiver and a mysterious double murder case.