It sure does look like a synodontis eupterus.
Not the best pic though! How long have you had him, has he grown much?
Here's a pic of one of mine as a juvie, HTH!
DSC00731.JPG (111.7 KB)
I've been feeding mine the hikari algea wafers and he loves those and has grown two inches in a months time!! he was about 3" and is now 5"+ and begginning to look really nice especially when his fins are all flared!!