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Typhleotris mararybe
''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.〔Sparks, J. S. and P. Chakrabarty. (2012). (Revision of the endemic Malagasy cavefish genus ''Typhleotris'' (Teleostei: Gobiiformes: Milyeringidae), with discussion of its phylogenetic placement and description of a new species. ) ''American Museum Novitates'' 3764, 1-28.〕 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.〔
==Description==
''T. mararybe'' is about long. The body is uniformly dark brown in color, and the fins are mostly white with brown bases. Its sensory systems include a series of pores on its head, but it lacks eyes.〔
The fish is relatively slow-moving, but more responsive to approaching objects than the closely related ''T. madagascariensis'', diving to avoid them.〔 It can be distinguished from other members of genus ''Typhleotris'' by its dark pigmentation and aspects of its bone structure.〔 ''T. mararybe'' is possibly the sister species of ''T. madagascariensis'', as the two share characteristics in common that ''T. pauliani'', the only other member of the genus, does not.〔 ''T. mararybe'' may have evolved from an ancestral species that lacked pigmentation and was blind, but that pigmentation was regained for camouflage in parts of the cave that receive sunlight.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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