I have a Raphael catfish in with community fish, I have a sneaky suspicion that he may be bullying the other fish at night. Does anyone know if he would be ok to go into another tank with a fire eel and a saddled birchir? They are both small so won't bother him other than fighting for hides but will he eat the fire eel?
It's hard to get a clear mental picture of how big that fish is, or how big the unpictured fire eel is (or birchir, but birchirs can be fine with just about anything, I had one in a mixed tank with cichlids when it got a little bigger and it wasn't bothered, miraculously).
If a fish can fit in another fish's mouth, the answer is probably "no".
If it can't, the answer is "watch the tank carefully after new additions".