Lucifuga teresinarum is a species of cavefish in the family Bythitidae. It is endemic to Cuba.Nielsen, J.G., D.M. Cohen, D.F. Markle and C.R. Robins, 1999. Ophidiiform fishes of the world (Order Ophidiiformes). An annotated and illustrated catalogue of pearlfishes, cusk-eels, brotulas and other ophidiiform fishes known to date. FAO Fish. Synop. 125(18):178p. Rome: FAO.

Size This species reaches a length of .

Etymology The fish is named for two members of the faculty at the Universidad de la Habana and colleagues of the author. Dr Maria Teresa del Valle Portilla, who is a physician and a full professor, and Maria Teresita de la Hoz Gonzalez, who is a biologist.

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