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Eyeless 'Demon Fish' Found in Alabama Cave
31 Jul
Summary
- A new species of eyeless, hunchbacked fish was discovered in Bobcat Cave.
- The fish, named Demogorgonichthys arcanus, resembles a sci-fi monster.
- This extremely rare fish may be critically endangered due to its small population.

A remarkable discovery has been made in Bobcat Cave near Huntsville, Alabama, with scientists identifying a new genus and species of fish. This eyeless, pigment-less creature, characterized by a hunchback and unique snout, was found during a survey of the cave system. Researchers have named it Demogorgonichthys arcanus, or 'demon cavefish,' a nod to the monster from the popular Netflix series 'Stranger Things.'
This newly identified species is believed to be exceptionally rare, known from only one site with a presumed small population. Initial surveys indicate the demon cavefish may be critically endangered. However, the presence of existing water quality protections near the cave offers some hope for its survival. The discovery underscores the potential for unidentified species to exist in unexpected places, even beneath U.S. Army installations like Redstone Arsenal, which lies above Bobcat Cave.
The findings, published in the journal Scientific Reports on July 6, contribute to understanding the planet's biodiversity crisis. Researchers noted that cave organisms can act as indicators of groundwater contamination, making their study crucial for both ecological health and human survival. The demon cavefish joins other protected endangered species within Bobcat Cave, including the Alabama cave shrimp and specific cave crayfish.