if you can trace him you can charge him if he has an account here you can tag his account here and open an accusation here, but you need proof if you want to charge him since you mention not significant a simple tagging is not enough so you can warn others not to transact with him and save others from getting scam.
If there is enough evidence, the scammer can be tagged if he is in this forum. Scammers try to hide themselves by using all means before scamming. But they are not always successful and their footprints remain online. I myself have been a victim of scams, I have tried a lot to get my funds back. But I failed and could not take any action due to lack of sufficient evidence.