Typhleotris mararybe is a species of fish in the family Eleotridae, the sleeper gobies. It is a troglobitic species endemic to cave habitat in Madagascar. It is unique among known cave-dwelling fish in that is both blind and darkly pigmented. It has well-developed nonvisual sensory systems and dives to avoid approaching objects. The fish was first collected in 2008 and was described to science as a new species in 2012.