Ouch! No local saving is really a punch in the gut after coming back to this after investing some time.
You need more feedback on the Eggacha screen, because after unlocking it, players are going to visit it and get confused as to why it's blank. Also when there are eggs, some text instructing the user to select / repeatedly click would be nice.
Same for the Aquarium: if there are no fish, explain how to get them, and explain that dragging fish to the slots gives bonuses.