Is there doubt about this? Are you refering to something like Big Foot?
No. I only mean that, while our ancestry runs through the fish, there may be no fish alive exactly like anything that became us. The coelacanth may come close. No extant ape species is exactly exactly like anything we came from, although we probably looked a lot like chimps about 5 million years ago. (That is to say, they've probably diverged less from that common ancestor than we have.)