Never hurts to make sure. Now let me think...

This is a bit different from my usual puzzles, but somehow I don't think my usual fare will suit this world. [what? I can't really hand out sliding puzzles through text can I?]

I'm a slippery fish in a cloudy sea;
Neither hook nor spear will capture me;
With your hand you must hunt and seize this fish,
To see that it ends up in the dish.