Excellent little game! Really really well polished considering the time constraint.
I was dumb and did not drag the first few fish/cards into my inventory. (even though it was there in red text)
Is there a reason the drag and drop mechanic needs to be there from a design standpoint? Maybe it makes the player feel like they are "hauling in" the fish or something?
Either way- I enjoyed the minigame, and the upgrade progression seemed to be very natural. It also had a very cozy aesthetic. Great job.
Give Hurricane Watch a go if you get time!