I just saw a documentary on “Australia’s Deadliest” And It was very interesting!
This wasp I saw on the TV is nasty.
Here are some quick facts about it.....
A tarantula hawk is a spider wasp (Pompilidae) that preys on tarantulas. Tarantula hawks belong to any of the many species in the genera Pepsis and Hemipepsis. They are one of the largest parasitoid wasps, using their sting to paralyze their prey before dragging it to a brood nest as living food; a single egg is laid on the prey, hatching to a larva which eats the still-living prey.
(A direct quote From https://en.m.wikipedia.org/wiki/Tarantula_hawk )
@Colin_T, have you ever seen one of these? I know that you live in Perth (Australia) so I was wondering if you have ever seen one! 
Not fish related, but still super cool!
This wasp I saw on the TV is nasty.
Here are some quick facts about it.....
A tarantula hawk is a spider wasp (Pompilidae) that preys on tarantulas. Tarantula hawks belong to any of the many species in the genera Pepsis and Hemipepsis. They are one of the largest parasitoid wasps, using their sting to paralyze their prey before dragging it to a brood nest as living food; a single egg is laid on the prey, hatching to a larva which eats the still-living prey.
(A direct quote From https://en.m.wikipedia.org/wiki/Tarantula_hawk )
Not fish related, but still super cool!