Speoplatyrhinus poulsoni Cooper and Kuehne, 1974, Key Cave, Alabama, United States.
OTHER COMMON NAMES
Grows to 2.83 in (7.2 cm). This species has an extremely elongated and anteriorly depressed head that makes up one-third of the standard length in adults. The snout is laterally compressed, with a terminal mouth. The species is white in coloration and lacks externally visible eyes as well as pelvic fins.
is restricted to Key Cave, Lauderdale County, on the north bank of the Tennessee River.
They are found mostly in still waters of cave systems.
Nothing is known about this very rarely studied species.
FEEDING ECOLOGY AND DIET
They feed on copepods, isopods, amphipods, and other small cavefish.
Little is known about the
of this species, and what is known is not encouraging about its future potential for survival. It appears that only a small percentage of females reproduce, producing only a few eggs, and reproduction does not take place every year.
Its total population size is estimated to be less than 100 individuals, which would make it one of the most endangered fish species in the world. It is classified as Critically Endangered by the IUCN and Endangered by the U.S. Fish and Wildlife Service. It is being threatened by groundwater pollution from agricultural runoff.
SIGNIFICANCE TO HUMANS
Of particular scientific value as a cave species.
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