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They are small freshwater fish found in the dark environments of caves (underground lakes, pools, rivers and streams), springs and swamps in the eastern half of the United States. Like other troglobites , most amblyopsids exhibit adaptations to these dark environments, including the lack of functional eyes and the absence of pigmentation .
Like other cave-adapted fish, the blind gudgeon is entirely blind and lacks pigmentation, using sensory papillae on its head and body to move around and find food. [4] It has a reduced number of scales on its body and the head is almost scaleless. [5] It reaches a standard length of 5 cm (2.0 in). [6]
The surface and cave forms of the Mexican tetra have proven powerful subjects for scientists studying evolution. [28] When the surface-dwelling ancestors of current cave populations entered the subterranean environment, the change in ecological conditions rendered their phenotype—which included many biological functions dependent on the presence of light—subject to natural selection and ...
The Hoosier cavefish (Amblyopsis hoosieri) is a subterranean species of blind fish from southern Indiana in the United States. Described in 2014, A. hoosieri was the first new species of amblyopsid cavefish to be discovered in 40 years.
Stygichthys typhlops, the blind tetra or Brazilian blind characid, is a species of fish in the family Characidae and the only member of the genus Stygichthys. It is endemic to caves in northern Minas Gerais, Brazil. [2] Like other cave-adapted fish (e.g. the cave form of the Mexican tetra), the Brazilian blind characid is blind and lacks ...
What kind of fish is Dory? Dory, the small blue fish with a bad memory from the "Finding Nemo" franchise, is a blue tang, or a Paracanthurus hepatus in scientific terms. Native to the Indo-Pacific ...
Günter Grass's 1977 novel, The Flounder, is loosely based on the fairy tale, as are Emanuele Luzzati's version, Punch and the Magic Fish, and Ursula LeGuin's novel The Lathe of Heaven. [citation needed] A short cartoon based on this story was part of the American animated television series, The Rocky and Bullwinkle Show. The Flounder was ...
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