synodontis? Aren't there multiple species, which get to a variety of sizes and may have different temperaments? Can you specify, post pics or even better both? Also it would be nice to know where you are located.
If it is a synodontis nigriventris I am interested. If it's another synodontis I still might be but would have to look it up first.
Do you still have your 4" Eupterus?!!; If so, could you please call me on my cell phone @ (604)339-0853 24/7 as I'm interested & if you don't mind sending some actual pictures to my email account [email protected] since I can't PM you just yet being a "new Member" & all, OK!.