[too-buh-feks, tyoo-] 
) -fex. | any common, bottom-dwelling worm of the genus Tubifex, often used as food for aquarium fish. |
| tu·bi·fex (tōō'bə-fěks', tyōō'-) n. pl. tubifex or tu·bi·fex·es Any of various small slender reddish freshwater worms of the genus Tubifex, often used as food for tropical aquarium fish. [New Latin Tubifex, genus name : Latin tubus, tube + Latin -fex, maker; see dhē- in Indo-European roots.] |