Fish don't appear, but their eggs sure do.
Water birds, travelling, often get eggs stuck on their feet or in their feathers. They land, duck under water, the eggs get "unsuck", and "poof" the eggs are deposited, and soon hatch
i think it is because they look like kettles
It varies on where the lake is located, what temperature the lake is, size, etc.
It depends on the lake. Some do, some do not. However, there are more lakes that have fish than ones that don't
A kettle lake is a shallow, sediment-filled body of water formed by retreating glaciers or draining flood-waters.
No. Tropical Fish required warmer water.