He is chilling somewhere in the grass underwater. Just gotta collect it and you may accidentally wake one up.
Edit: Regarding the bait thing, I actually have a plan for their recruitment method to be via that way so you can't fish him up yet.
ok though not recruit-able yet we can find and chat with him underwater somewhere in the water grass. in the ch. 3 zone
Not really talkable, but you can fight them as of right now. Although when I get to adding the two settlements for this chapter, you will be able to chat to a few.