Okay guys, so I am looking to get a good or decent dive or spearfishing knife. Mainly used for dispatching fish (killing them), but also for line cutting and general safety. I was looking at something titanium, but I understand that titanium isn't going to hold a sharp tip on a stiletto style blade. So does anyone know of a good knife that won't rust? Also would prefer a serrated edge on one side and a normal edge on the other.
This is the knife I had in mind.
First time posting in Knife Center so be gentle