no ......
scuba spearfishing is considered not just very very very
unsporting ......
more importantly, it's frowned upon because it conditions sea
life to associate divers with danger .....
do it at a place often enough, and divers would see the place
empty of fishes, cos all the fishes, even the smaller, non-hunted
ones, would all hide or swim away from divers ....
and this cock fellow was wondering why he got only the small
fishes .... and he was blaming the guide ! ... 
*faints...
Was he unaware of the implications or did he simply not
care?