你是什么鱼？
它类似于一种看起来既不实用也不漂亮的鱼。
It was similar to a kind of fish which looked neither useful nor beautiful.
在这项研究中，加拿大麦科文大学的研究人员训练了一种叫做非洲慈鲷的鱼，让它们游到鱼缸的特定区域获取食物。
In the study, researchers from Mac Ewan University in Canada trained a kind of fish called African cichlids to go to a certain area of their tank to get food.
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