Fun and creative! I like the pixel art, and I've seen a lot of fishing mechanics in games before, but never a slot-machine style. Super interesting blend of cozy game-style fishing with tower-defense style base defense mechanics.
Some audio/music/sfx would be a nice addition.
Took me just a minute to figure out what I was doing at the start; having played other tower defense games, I was surprised to see that I controlled a character freely with the arrow keys, but it clicked pretty quick for me.