Redhawk Caldera By any other name.

Somnia's attention turned to the lake that FitzDutiful had been fishing in, with a question about whether any fish was even in the lake. "It's a lake," replied Fitz, his knowledge of gamekeeping practically non-existent. "Don't all lakes have fish?" He had no idea that fish needed a way to get into a lake, or that lakes needed a source of any kind.

As far as FitzDutiful knew, any body of water usually contained the slippery things called fish. If the jumpy things called frogs were around then it was a definitely case that fish were about too. He hadn't seen any frogs in this lake, yet, but then fish didn't always mean frogs. FitzDutiful didn't have the knowledge to go through the thought process that Somnia had and so, he just looked at her quizzically while waiting for the answer to his question.