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The Guadalupe bass (Micropterus treculii) is a rare species of fish endemic to the U.S. state of Texas, [2] where it also is the official state fish.It is restricted to creeks and rivers (including the Guadalupe River, hence the name Guadalupe bass), and is listed as near threatened. [1]
Populations of large predatory fish in the global oceans were estimated to be about 10% of their pre-industrial levels by 2003, [1] and they are most at risk of extinction; there was a disproportionate level of large predatory fish extinctions during the Cretaceous–Paleogene extinction event 66 million years ago. [2]
The redfin and grass pickerels occur primarily in sluggish, vegetated waters of pools, lakes and wetlands, and are carnivorous predators feeding on smaller fish. However, larger fishes, such as the striped bass (Morone saxatilis), bowfin (Amia calva) and gray weakfish (Cynoscion regalis), prey on the pickerels in turn when the latter venture into larger rivers or estuaries.
The common name of these fish is related to their bizarre, tubular eyes. The genus name Gigantura refers to the Gigantes , a race of giants in Greek mythology —coupled with the suffix oura , meaning 'tail', thus Gigantura refers to the greatly elongated, ribbon-like lower half of the tailfin that may comprise over half of the total body length.
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This year’s marine heat waves and spiking ocean temperatures foretell big changes in the future for some of the largest fish in the sea, such as sharks, tunas and swordfish.
The Texas cichlid (Herichthys cyanoguttatus), also known as the Rio Grande cichlid, is a freshwater fish of the cichlid family, and the only cichlid species that is native to the United States. It is found in the lower Rio Grande drainage in Texas near Brownsville and northeastern Mexico .
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