I can't imagine that throwing speed (or—related—throwing force) would be a big limiting factor for spear fishing. Reflexes/reaction speeds would be more relevan

I can't imagine that throwing speed (or—related—throwing force) would be a big limiting factor for spear fishing. Reflexes/reaction speeds would be more relevant. Not sure how other primates compare to us here, but likely pretty well for any animal living in the wild compared to modern urbanised humans.