For some reason I think you mean how everyone knows how much species they have.
To find out, open your shticker book (the green book in bottom right hand corner), on the side where you can look at your tasks, gag track progress, logout, gags, and other things, towards the bottom/end will be a fish. Click on the fish, then at the top of the screen their should be 3 tabs, click the one that says album.
HOpe I helped and this is what you wanted to know
