Hi, One quick question. If... I get a Synodontis Zebra Hybrid that will be living with my Synodontis FeatherFin will they breed? If so I don't want the new one.
No.
Most hybrids are sterile and created through the use of hormone injections. Not 100% sure but don't think S. eupterus has ever been tank bred. Might remember 1 account from Australia but even that I'm not sure about.