The idea is great and i imagine it wasn't easy to code the "sweet spot" as a first time developer. I like the reel length showing how close you are to catching the fish, plus the green bar changing direction.
However the level design isnt great, the collisons are off and the camera is a bit wonky when doing the blend. I'm not sure if this was just an issue with me but the mouse kept showing up sometimes and i had to click and hold to look around. I'm not sure if you can actually choose where to cast either as you get no aiming feedback.