What are these big fish feeding on?

这些大鱼吃什么呢？

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The fish that learned to prefer the rich feeder were then allowed to watch their fellow fish feeding in a separate test but, this time, the two feeders had been swapped.

将那些已习得偏好“高量喂食器”的九刺鱼放在一边，让它们看着同伴九刺鱼进行另一项测试，不过，这一次两个喂食器位置互换了。

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In 2006, Angelo Bisazza at the University of Padua set out to observe the differences in feeding behaviour between strongly-lateralised and weakly-lateralised fish.

2006年，帕多瓦大学的安杰洛·比萨扎开始观察强侧化和弱侧化鱼类的进食行为差异。

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Some dams on rivers feeding the Mekong have disrupted fish populations.

VOA: standard.2010.01.11

Off Palm Beach, Miami, marine developer US Submarines is building a six-room habitat 30 m below, complete with cooking facilities, lounges and fish-feeding stations.

CNN: ASIANOW - TIME Asia | Travel Watch

For thousands of years, cod and other bottom-feeding fish were the top predators in the system.

ECONOMIST: Lobsters in Maine

Or the fish's feeding might have changed.

BBC: Nature's spring: Cod bounce back