The problem with the above explanation is that the Japanese starry flounder population is almost exclusively left-eyed, and natural selection never promotes a purely less advantageous variation.

• 上面这种解释的问题是日本的星形比目鱼种群几乎全是眼在左侧的，而大自然的选择则从不推动完全没有有利条件的种属发展。