Dionda is the genus of desert minnows, small fish belonging to the family Cyprinidae. They are native to fresh waters in the United States and Mexico. Their range is centered in the Rio Grande basin, but they also occur in associated systems, including Nazas–Aguanaval of north–central Mexico, and Nueces, San Antonio and Colorado of Texas.
Opheodrys aestivus, commonly known as the rough green snake, is a nonvenomous North American colubrid. It is sometimes called grass snake or green grass snake, but these names are more commonly applied to the smooth green snake. The European colubrid called grass snake is not closely related. The rough green snake is docile, often allowing close approach by humans, and seldom bites. Even when bites occur, they have no venom and are harmless.
The Southwestern Native Aquatic Resources and Recovery Center, formerly known as Dexter National Fish Hatchery & Technology Center, is a U.S. Fish and Wildlife Service facility dedicated to fish culture techniques for threatened and endangered fishes of the American Southwest. Located in Dexter, New Mexico, it is the only federal facility in the nation dedicated to studying and holding only threatened and endangered fish. Scientists at the Dexter facility perform life history studies and carefully analyze fish genetics while maintaining a refuge for 16 imperiled fish species. Dexter National Fish Hatchery was established in 1931, to satisfy demands for game fish throughout the Southwest. New laws brought changes to the hatchery in the 1970s.
The Rio Grande silvery minnow or Rio Grande minnow is a small herbivorous North American fish. It is one of the seven North American members of the genus Hybognathus, in the cyprinid family.
Notropis is a genus of freshwater fish in the family Cyprinidae. They are known commonly as eastern shiners. They are native to North America, and are the continent's second largest genus.
The Devils River minnow is a species of ray-finned fish in the family Cyprinidae. The minnow coexists with other closely related species and other cyprinids in the range of northern Mexico and southern Texas.
The sand shiner is a widespread North American species of freshwater fish in the family Cyprinidae. Sand shiners live in open clear water streams with sandy bottoms where they feed in schools on aquatic and terrestrial insects, bottom ooze and diatoms.
Toxodontidae is an extinct family of notoungulate mammals, known from the Oligocene to the Holocene of South America, with one genus, Mixotoxodon, also known from the Pleistocene of Central America and southern North America. Member of the family were medium to large-sized, ranging from around 350–400 kilograms (770–880 lb) in Nesodon to 1,000–1,200 kilograms (2,200–2,600 lb) in Toxodon, and had medium to high-crowned dentition, which in derived members of the group evolved into ever-growing cheek teeth. Isotopic analyses have led to the conclusion that Pleistocene members of the family were flexible mixed feeders.
The rainwater killifish is a small silvery fish with yellow flashes and diamond shaped scales that is widespread from Cape Cod, Massachusetts, through to Tampico, Mexico. It is commonly found in large numbers in fresh to brackish estuarine environments. It feeds on tiny crustaceans, mosquito larvae, small worms, and mollusks. It can reach up to 62 mm.
Leuciscinae is a subfamily of the freshwater fish family Cyprinidae, which contains the true minnows.
The blacktail shiner is a small freshwater fish in the family Cyprinidae native to the United States.
The plains minnow is one of the 324 fish species found in central United States. It is a large minnow that was once a common bait fish. The plains minnow requires shallow, slow-moving streams to complete its life cycle. Pollution, dams, and introduced sport fish have caused populations to decline.
Rio Grande Silvery Minnow v. Bureau of Reclamation, called Rio Grande Silvery Minnow v. Keys in its earlier phases, was a case launched in 1999 by a group of environmentalists against the United States Bureau of Reclamation and the United States Army Corps of Engineers alleging violations of the Endangered Species Act and the National Environmental Policy Act. The case resulted in significant changes to water and river management in the Middle Rio Grande Basin of New Mexico in an effort to reverse the damage that had been done to the habitat of two endangered species.
Artie Lou Metcalf was an American malacologist.
The San Juan River Basin Recovery Implementation Program or (SJRIP) is a river management project that was established to recover two endangered fish species in the San Juan River, the Colorado pikeminnow (Ptychocheilus lucius) and the razorback sucker (Xyrauchen texanus), while allowing water development and management activities to continue in the San Juan River Basin.
Notropis megalops, the West Texas shiner, is a species of freshwater ray-finned fish from the family Cyprinidae, the carps and minnows. It was originally described by the French ichthyologist Charles Frédéric Girard in 1856 but was thought to be a misidentification for the Texas shiner but detailed genetic and morphological studies have shown that N. megalops and N. amabilis are two valid but separate species. N. megalops has been found only in the drainage of the Rio Grande where it has a fragmented distribution and low levels of genetic diversity. Notropis megalops is endemic to the Rio Grande drainage of Texas and in Coahuila and Nuevo León in Mexico and does not overlap with N. amiabilis and despite their morphological similarity they do not appear to be closely related.
The slim minnow is a species of freshwater ray-finned fish from the family Cyprinidae, the carps and minnows which is endemic to the United States, in Ozarks of Arkansas, Kansas, Missouri, and Oklahoma.
The little yellow-shouldered Mesoamerican bat is a species of leaf-nosed bat found in Mexico and Central America.
The Rio Grande sucker is a North American freshwater fish in the family Catostomidae. It has a typical bottom-feeding phenotype and fills lower trophic levels alongside Rio Grande cutthroat trout and Rio Grande chub species. It is smaller sized in comparison to its other family members, with females being the larger between sexes. Coloration tends to benefit the species due to counter-shading patterns. It is endemic to the Rio Grande basin and was once common throughout. The species has maintained a population in New Mexico, Colorado, Arizona, and Northern Mexico, but has faced challenges from the pressure of non-native species, habitat loss, degradation, and a variety of other aquatic ecosystem changes. There is current pressure from environmental organizations to federally list the species as threatened or endangered.
