Pretty good for a first stab at Unity! The graphics remind me of PS1 era, in a good way. The sound, the music, and the visuals all really helped here. Like other people said, it's very relaxing.
I caught one but didn't know what to do with it
Hope you get to work on it more!
By the way, for me it seemed like the mouse scroll sensitivity was too much. You could perhaps, set a reasonable cap on how fast the lure drops/raises.