Researchers discover first sleeper goby cavefish in Western Hemisphere

Researchers have described a new genus and species of cavefish from Mexico - the Oaxaca Cave Sleeper. It has not been collected or seen in more than 20 years and lives in a cave system threatened by damming. Less than 0.5 percent of all fish species are cave-adapted and most of them are endangered because their cave habitats are limited and vulnerable to environmental threats.

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