This one is a roughy.
It's in the genus Hoplostethus.
Two different species of possibility out here.
Looks like kind of armor, armored plates on the front of this fish head.
And that's exactly why they're called "roughy," because of that rough texture on the head.
Before people started marketing them, they were actually called slimeheads
because they produce a lot of mucus on the pores on the head.
That wasn't such a great name for marketing purposes, so they started calling them roughies.
The roughies have been aged at 80 to 100 years old.
So very long-lived fish and they mature at about 20 years or so.
That's one of the reasons why they're so vulnerable to overfishing --
they're slow growing, slow reproducing.