Nice concept and I really like the way you control the fish, it feels very organic and like directing a fish swimming about - control, but not fully precise. I really like that.
The worms I struggle to get because they all spawn from the top but if I go to the top to try and catch the worms, there is almost no time to react to fish hooks coming down from the top. Maybe if they fell at different speeds and there was more of a "deadzone" time where that the fish hooks don't instantly catch you when they first spawn, that would add just a little bit of leeway and more strategy by giving the player reasons to go across the entire screen, rather than just the top of it.
Good work!