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|Noun||1.||bottom-feeder - a scavenger that feeds low on the food chain|
scavenger - any animal that feeds on refuse and other decaying organic matter
|2.||bottom-feeder - a fish that lives and feeds on the bottom of a body of water|
fish - any of various mostly cold-blooded aquatic vertebrates usually having scales and breathing through gills; "the shark is a large fish"; "in the living room there was a tank of colorful fish"
mullet - bottom dwelling marine warm water fishes with two barbels on the chin