Adorable artwork and animations! You nailed the vibe with the sound design. I played until I reached 10k. My only nitpick would be the fishing progress bar - it's the only asset not in the same resolution as everything else.
I was also quite confused with the mini-game UI - on one hand there was the clicking game but it also threw in other information such as fish rarity and the 10k goal. I wasn't quite sure what the sign in the middle was. I think this info can be present elsewhere so people have a better idea of what they're looking at when the reeling begins.
I didn't realise I was getting different fish rarities until I noticed the text colour when something was caught.
Nonetheless, it was easy to get the hang of and leaves me wanting more. Things like upgrades and mini-game variations would really bring the concept to life. Great work :)