I will be setting up a 55g rainbowfish tank and will be adding my 6 " polka dot synodontis i was wondering if i could add a troop of cories? He has a big mouth!! I'm guessing dwarfs are out.
Not sure what type of synodontis you have. I have 3 adult size synodontis petricola in with 6 adult size panda cory's and haven't noticed any problems. They have lived in this tank for over a year.
Not Synodontis eupterus or Synodontis angelicus? I tried the former with my cories before with no problems but this is only my experience so please do not rely on this as this may or may not work for you.
i had a syno (upside down cat and i dont remember real name) and it killed a cory and a raphael. i seen it go right after the raphael as soon as i put it in
I researched this and it seems that it would be a problem if not in the beginning but as they fish age and get more Territorial, the synos may become aggressive to the cory cats.