This is a example of a lake called Dayang bunting lake in my home country of Malaysia. It’s like a lake in an island surrounded by water. The origin is like a limestone place collapsed and rainfall collected creating a humongous lake. The surroundings are very high and unlikely to flood over. And there’s like fish in the lake. How did the fish get in there. With no input of water into the lake
In: Biology
There’s a couple of ways it could have happened. The most obvious one is perhaps that humans could have literally carried buckets of fish there and released them, hoping that it would lead to a self-sustaining population that they could later fish for.
The lake might not always have been separated from other lakes. Sometimes, the land shifts, rises, or sinks. What is above water now could have been below water centuries, millennia, or even longer ago.
There’s also tidal waves or tsunamis that could have carried fish from one body of water to another.
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