Honestly nothing to really criticize about, apart from that you'll occasionally get multiple points from one fish. (I assume it's a spawning issue) The colours are bright and attractive, movement is fluid, when you get hit you don't feel cheated as it's 100% your mistake, etc. Overall a very good experience, you've done well.
Curious as to why you created 3 lanes, rather than compete randomization?
Also had a little fun with the game files as seen below.
