Trying again, I was able to actually catch several fish. But I'm still not sure what to do. I can dismiss the fishing pole, and see the eels I caught in my aquarium. I can click on them to see their stats, but can't seem to do anything with them. After a while they disappear.
I can also click on the store, but since I have no gold (and no obvious way to get any), I can't afford anything there.
How is this game supposed to work?