Not all catfish are created equal: we tend to think of catfish as slimy bottom feeders, but that is only true for a small percentage of species.

并非所有的鲶鱼都是生来平等的：我们倾向于认为鲶鱼是黏糊糊的食底泥动物，但那只适用于一小部分物种。

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These Australian mammals are bottom feeders.

这些澳大利亚哺乳动物是食底泥动物。

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LL: Unfortunately, there are a lot of bottom feeders in the world.

就是啊，这个世界还是有不少这种卑鄙的坏人。 对了，Larry，这个bottom feeder是不是只能用来形容犯罪分子？

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Despite being one of the league's bottom feeders, the Wizards had shown an ability to knock off top teams.

WSJ: The Knicks' So-Called 'Soft' Part of the Schedule

Among the bottom feeders were McDonald's (not part of a typical viewer's food spread for a big game) and credit card titans Visa and MasterCard.

FORBES: Magazine Article

The kelp cover returned, but the bottom feeders continued to be overfished (Maine's cod catch plummeted by 70% during the decade), so the lobster population shot up.

ECONOMIST: Lobsters in Maine