In which South Asian countries are the wild ancestors of laboratory zebrafish native?
Answer
India, Pakistan, Nepal, and Bangladesh
The origins of the wild zebrafish population trace back to South Asia. These freshwater fish naturally inhabit specific regions within that geographical area. The countries explicitly named as containing their native waters include India, Pakistan, Nepal, and Bangladesh. In these locations, they are not found in deep waters but rather thrive in shallow, slow-moving environments such as streams, ditches, and rice paddies, which contributes to their generally hardy nature when adapting to controlled laboratory water conditions.
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