I'm always very suspicious when i see video with asiatic people (especially gals) and "primitive technology" in the description.
Unfortunately they discovered that this kind of video produced a huge amount of views and started to make fakes to gain on advertisings
There are quite a few things there are not right
the very narrow field of camera always centered on her.
When she shoot you never see the fish. It may be well already stubbed outside of view.
The fishes are almost inactives or dead on the arrow. Not my experience when bow or spear fishing.
I rapidly watched another video and saw heavy editing and similar scene picking and setup.
In my opinion there is a great chance that is not genuine