The fish farming plant really should have been put in the tools section of the store because that is really what it is a tool. You can only order 7 days worth of stuff in that "facility" just like with the oil pump and truck that are tools.
So, in effect, it's not really a fish farm, but more like a fish truck that delivers what players order? Hmmm, then I gotta wonder -- whyever was it designed to resemble a fish farming facility? Just doesn't seem logical (scratches head)
Oh, well, just call me "Ms. Spock" LOL