It saved me from being sucked into buying an inappropriate fish today!
There was a tank of these stunning little red scats not much more than an inch in diameter. In the back of my mind was the vague recollection of researching those when I wanted to convert one of my tanks to brackish, and read that as they mature they require a full salt tank. But the GUY was telling me how they are bred in freshwater, so are acclimatized to that, that you only need 2 (told him I didn't want a schooling fish). I said they grow about the size of a dinner plate don't they? (Which I would be happy with) but he said oh no they only get (saucer size). I told him I'd need to look more into it before making a decision. So I whip out the old iPhone, and plug in the search term to discover that my vague recollections were spot on. 2x inappropriate $40 fish NOT bought!