tu·bi·fex (tbə-fĕks′, ty-)
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 the Appendix of Indo-European roots.]
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