Looks like a chimera, or maybe a sturgeon relative of some kind. It looks like it has a heteroceral tail, which teleosts don't have. The mouth looks just like a sturgeon's too.
Sturgeons only have "scales" in a very small area near the base of their tail. They have bony plates along their back, and a bony head. Otherwise they are cartilaginous. Sort of a mix between shark and bony fish.
Chimerans, which I think this fish is one of, are in the Order Chondrichthyes along with sharks. They are commonly called 'ratfish'.
Here's a guy on the net who has the same pic and while I agree it's the genus
Rhinochimaeridae I'm not convince he has the correct species though I'm not sure what species it is either.