So I have played Stardew Valley since it was released and I have enjoyed every second of it. With the newest update being released and the different types of farms being released, I had to step up and try a new world. I decided to go with the riverworld seed and got right away, fishing upon the second day of the game. It was enjoyabled, but now i bring up an idea that I feel, needs to be added to the game either as a mod or in a new update, Piscicutlure or a fish farm building. I remember playing a harvest moon game where you could construct a building and then grow fish inside of the building to then sale or do what ever you want. I think for the game, there should be a building that you could place down on your farm, a small pond or a building that then you could place fish that you have caught into the building and then over time will increase the number of fish in the pond that you can then sale or do what you do with your fish. Depending on the type of fish you put into the pond, it would produce more fish over the days. The more rarer fish would take up to 10 days to reproduce another fish, while the less rare fish might only take a single day to reproduce more fish. This would be nice for the farmer who wants to base there money growth off of fishing, without the consent trouble of having to fish everyday to get the fish to put into there bin, though you would still have to catch the fish. Perhaps for the fish ponds to be built, you would have to get a certain rank in fishing to construct the ponds.