丽鱼进化出了不同的形状和大小，以及不同种类的下颚，用以专门摄取不同种类的食物。
The cichlids have evolved in different shapes and sizes, and with a variety of jaw types specialized for eating certain kinds of food.
眼斑星丽鱼，俗称地图鱼，原产于南美亚马逊水系，分布于巴西、委内瑞拉、圭亚那等国家。
Oscar (Astronotus ocellatus), commonly known as map fish, which is distributed in the Amazon area , For example, Brazil and Venezuela.
研究小组推测，随着时间的过去，丽鱼科鱼的眼睛适应于周围浅蓝色或者淡红色的光线，随它们游到什么位置而定。
The team speculated that, over time, cichlid eyes adapted to either the bluish or the reddish ambient light, depending on where they lived.
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