alaskagirlzkikazz points out correctly the refraction of light in water however she got it opposite as to which way you aim. You aim below the fish, not above the fish. I can attest to this as I sometimes get dinner by shooting delicious sheepshead fish that sometime come around my dock. You must aim below what you see when looking at the fish. While the light bends down, the arrow goes straight as would the bullet!

The shock watches were badly used.
They needed to be free floating to get an accurate reading on the water shockwave, and not clamped to the edge of the barrel.

It just mentions fish, it doesn't say anything about water or live fish. Think about it.

I personally think they were being careless... what if ( yes I'm using "what if"), the bullet ricocheted off the water and hit something reflective in their location? If that were the case, it very well could strike the cast or crew. As I recall, no one was wearing protective devices... Is anyone with me? I've personally shot at water before and unexpectantly hit things to the left or right out of water...

I don't know if anyone has posted something like this but I hope someone from the show sees this flaw. I had watched another episode where the shock wave stickers were used (the wild west "jailbreak" myth). In that episode it was explained that the red color posed little threat to humans while orange was much more dangerous and green became fatal. When shooting the fish in a barrel these stickers were used again. This showed that there was enough G force to break all three stickers. To me, that sounds like it not only would the waves kill a fish but also a human. (A human who sat in a barrel and missed being shot at.) This doesn't seem correct. My hopes are that someone sees this mistake and corrects the procedure. Thank you!

I thought that the way Jaime brought the fishy back to life was a bit creepy O.O but its ok Jaime we still love u
We love Adam more though sorry
yeah i dont understand the whole fish in a barrel thing ... who came up with that but i think its a cool myth and i love the show