Good game.
The only two pieces of feedback i have is that the game gets extremely hard after the 7th fish, and i think it's hard to progress past that. The other thing is that when you catch a fish, the fish circle is still inside the catch area so if you spam space bar enough it's easy to catch multiple fish in one go. Was this intentional? If i was to offer some feedback on the second part, I would respawn the fish circle away from the catch area.