- bottom feeder - an opportunist who profits from the misfortunes of others
--1 is a kind of opportunist, self-seeker
- bottom feeder - a scavenger that feeds low on the food chain
--2 is a kind of scavenger
- bottom feeder - a fish that feeds on the bottom of a body of water
--3 is a kind of fish
--3 has particulars: mullet - bottom feeder - a scavenger that feeds low on the food chain