事实上，科学家们过去一直认为非洲慈鲷可能有很好的记忆力。

In fact, scientists had been thinking for a long time that African cichlids might have a good memory.

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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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那鱼的后代，现在叫鲷，继续游在非洲和南美洲的淡水水域里。

And the descendants of that fish, now called cichlids, continue to swim the fresh waters of both Africa and South America.

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