I really like the vibe of this one, very Stardew valley, but at dusk.
The art is very pretty, but I do have some questions about the anatomy of whatever is going on here - his head is a fish, he has a fish tail, and he's also capturing his own species to eat?
It took me a little while to figure out how to play at first, I had my audio turned right down so I didn't hear the audio cue. I think there should be a visual prompt when you first catch a fish, just like when you're fighting the line.
I also don't know where the WASD keys are, I have to look. I think if you added directions to the popups, it would make it a lot easier. I was struggling on the easy pond!