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The native species of the Los Angeles River were extirpated by the conversion of the natural riverbed into a concrete trapezoidal channel in 1938. The last known native species to be caught in the river was a rainbow trout in 1940 by a local fisherman.
They are native to Los Angeles, Santa Margarita, San Gabriel, San Luis Rey, and Santa Ana Rivers, as well as to Rainbow, Temecula, Malibu and San Juan Creeks. Many of the original populations have been extirpated, but it has recently been reestablished in the Arroyo Seco (Los Angeles County), a tributary of the Los Angeles River. It has been ...
Native Non-Native Notes Pacific Lamprey: Lampetra tridentata: River Lamprey: Lampetra ayresl: Pit-Klamath Brook Lamprey: Lampetra lethophaga: Klamath River Lamprey: Lampetra simiiis: Kern Brook Lamprey: Lampetra hubbsi: Western Brook Lamprey: Lampetra ricchardsoni: White Sturgeon: Acipenser transmontanus: Green Sturgeon: Acipenser medirostris ...
Many animals have made the Colorado River and surrounding valley their home. Animals along the river include several species of snakes, scorpions, tarantula, yellow-headed blackbird, desert iguana, kit fox, bobcats, and coyotes. Rivers and streams in the Colorado Basin were once home to 49 species of native fish, of which 42 are endemic. [19]
It is native to the Los Angeles River, Sacramento-San Joaquin, Pajaro-Salinas, Russian River, Clear Lake and upper Pit River river basins. It is predatory and reaches up to 1.4 m (4.6 ft) in total length. [2] The species has been introduced into the Salt River, where it is considered an invasive species. [3]
When the museum's team surveyed the region for three weeks in 2000, it tallied 1,600 species of plants, 71 species of mammals, and more than 500 species of birds. At least 28 species were new to ...
This decapod is commonly known as California freshwater shrimp, and is the only extant decapod shrimp in California that occurs in non-saline waters (its congener Syncaris pasadenae from the basin of the Los Angeles River is extinct). [6] [7] S. pacifica is one of only four members of the family Atyidae in North America. [7]
Species Common name Incilius alvarius: Sonoran desert toad * Anaxyrus boreas halophilus: Western toad Anaxyrus californicus: Arroyo toad Anaxyrus canorus: Yosemite toad: Anaxyrus cognatus: Great Plains toad Anaxyrus exsul: Black toad Anaxyrus microscaphus: Arizona toad * Anaxyrus punctatus: Red-spotted toad Anaxyrus woodhousii: Woodhouse's toad