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These lakes were drained by Spanish settlers after the conquest of the Aztec Empire, leading to the destruction of much of the axolotl's natural habitat. As of 2020, the axolotl was near extinction [6] [7] due to urbanization in Mexico City and consequent water pollution, as well as the introduction of invasive species such as tilapia and perch
The Aztec chub or Aztec shiner, [1] (Aztecula sallaei) is a species of freshwater ray-finned fish in the family Leuciscidae, the shiners, daces and minnows. [2] This species is endemic to Mexico . [ 3 ]
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 ...
Cavefish or cave fish is a generic term for fresh and brackish water fish adapted to life in caves and other underground habitats. Related terms are subterranean fish, troglomorphic fish, troglobitic fish, stygobitic fish, phreatic fish, and hypogean fish.
Hyalella azteca is found across Central America, the Caribbean and North America, [2] as far north as the Arctic tree line. [1] It lives among vegetation and sediments in permanent bodies of freshwater, including lakes and rivers, [1] extending into tidal fresh water, and freshwater barrier lagoons. [2]
A dredging pit was filled in to reestablish a low flood plain (bottom left) as part of the Basso/La Grange floodplain and spawning habitat restoration project along the Tuolumne River in La Grange ...
A fish with limb-like fins that could take it onto land. [75] It is an example from several lines of ancient sarcopterygian fish developing adaptations to the oxygen-poor shallow-water habitats of its time, which led to the evolution of tetrapods. [61]
Researchers examined genetic data from 388 wild chimpanzees in 18 countries, documenting adaptations driven by the nature of their habitat and revealing previously unknown genetic diversity within ...