Good idea, needs work
I like the idea, but the gameplay is a little ... awkward. Since the hook lags a bit when you jerk your mouse to the side, I want to slide the mouse faster. And then I move it outside the play area on accident, and the hook slows way down, and I snag a fish before I can get the cursor back in place. I'd recommend either speeding up the hook, or making the play area larger, or even both!
Like sending the hook down, pulling it back up is sluggish. But snagging dozens of fish at once and then shooting the hell out of them in the air is pretty rewarding.
All in all, I'd say this is a game worth playing. Probably not something you'd get addicted to and play every day, but it's still worth checking out. I'll probably get a good hour or so out of this game trying to unlock everything