Really fun game. At start it is a bit difficult to catch fish but I think it is okay. I recommend adding a list of fish we caught and didn't catch. I would play more and more like that. Still very cool game. Good job!
About the list of fish, yes, I used to consider that. However, creating > 10 fish and 20 variables of them is really a pain. And I end up skip that idea :D. I will try it in the next jam tho, I believe some fish has secret effect but players don't recognize bacause of my bad game design experience!