If you have the sad misfortune of catching a hake, they do make passable Dungeness crab bait, especially when fresh
Otherwise, the description of them resembling a used condom with teeth is as good a taxonomic representation for hake as I’ve ever heard or read. Unfortunately, they’re not always found in deep water. I’ve gotten into them hot and heavy while fishing plug cut herring in normal salmon depths. When they show up, nothing left to do but move. They’re voracious feeders and worse, they’re canabalistic .....so try and picture a used condom with teeth inside another used condom with teeth