Cathies 100% bob on, synodontis eupterus. Fantastic fish. (Am i giving away my soft spot for synos?) To be dead honest with you Jeff your 8 gallon tank is too small for one let alone two. These fish can get upto and above 7", you also have the possibility of them not getting on as they mature, for this reason i only keep 1 syno per tank. You need a much bigger tank or you need to bite the bullet and return the fish. Srry if you didn't want to hear this. Best advise - big tank 1 featherfin and an oscar!!