Hitch | |
---|---|
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Actinopterygii |
Order: | Cypriniformes |
Family: | Cyprinidae |
Subfamily: | Leuciscinae |
Clade: | Laviniinae |
Genus: | Lavinia Girard, 1854 |
Species: | L. exilicauda |
Binomial name | |
Lavinia exilicauda S. F. Baird & Girard, 1854 | |
Synonyms [3] | |
The hitch (Lavinia exilicauda) is a cyprinid fish endemic to central California, and was once very common. The common name may derive from a Pomoan word for this species. [a] It is the only species in the monospecific genus Lavinia.
The hitch was first formally described in 1854 by Spencer Fullerton Baird and Charles Frédéric Girard with its type locality given as the Sacramento River in California. [6] While the hitch is closely related to the California roach (Hesperoleucus symmetricus), and the two species can hybridize, leading some authorities to place H. symmetricus in Lavinia, genomic data appear to support the fishes' separate lineages. [7] The Lavinia genus has been placed in the subfamily Leuciscinae of the family Cyprinidae in the 5th edition of Fishes of the World . [8] Other authorities classify the Leuciscidae as a family and place the genus Lavinia in the subfamily Laviniinae of that family. [9]
Three distinct population segments (DPS) [10] or subspecies [11] of the hitch are recognized:
These common names or DPS correspond to the subspecies Lavinia exilicauda chi Hopkirk, 1974, [13] [14] Lavinia exilicauda harengus Girard, 1856 [15] : 183–184 [16] and Lavinia exilicauda exilicauda Baird and Girard in Girard, 1854, [17] : 137 respectively.
The hitch shape is deep and laterally compressed, with a small head, and a terminal mouth pointing upwards. They are generally silver all over; younger fish have a black spot at the base of the tail, losing it as they age, and becoming generally darker as well. The anal fin is noticeably longer than for other California minnows, with 11–14 rays, while the dorsal fin has 10–13 rays, and is placed further back, the base being positioned between pelvic and anal fins. The tail fin is large and deeply forked. They can get large for minnows, with lengths of up to 36 centimetres (14 in) total length. [3] All of these features make them look much like the golden shiner. The hitch is closely related to the California roach (Hesperoleucus symmetricus complex), and these taxa can hybridize with each other. [7]
Hitch are omnivores of the open water, eating a combination of filamentous algae, insects, and zooplankton. They can be found in lakes, sloughs, and slow-moving sections of rivers and streams. With the highest temperature tolerance among the native fish of the Central Valley, they can be found in both warm and cool water; they also have considerable salt tolerance, for instance occurring in Suisun Marsh (7–8 ppt salinity), and Salinas River lagoon (9 ppt).
Their range includes the Sacramento River–San Joaquin River System of the Central Valley, the Russian River, Clear Lake, Pajaro River, and Salinas River. Although once abundant, but no longer commercially fished in Clear Lake, populations have been declining. The most likely cause appears to be loss of springtime spawning water flows due to water diversion and damming.
The Clear Lake hitch was listed as threatened under the California Endangered Species Act in 2014. [18]
Cypriniformes is an order of ray-finned fish, which includes many families and genera of cyprinid fish, such as barbs, gobies, loaches, botias, and minnows. Cypriniformes is an “order-within-an-order”, placed under the superorder Ostariophysi—which is also made up of cyprinid, ostariophysin fishes. The order contains 11-12 families, over 400 genera, and more than 4,250 named species; new species are regularly described, and new genera are recognized frequently. Cyprinids are most diverse in South and Southeast Asia, but are entirely absent from Australia and South America. At 112 years old, the longest-lived cypriniform fish documented is the bigmouth buffalo.
Roach or The Roach may refer to:
The Sacramento perch is from the family, Centrarchidae, characterized by dorsal fins with spiny elements and known for its nesting behavior. There are about 31 species in this family, which include sunfishes, crappies, and basses. The Sacramento perch is considered in the sunfish group. It is the only species of Centrarchidae whose native habitat resides west of the Rocky Mountains, while all the other species are native to the east.
The Sacramento blackfish is a species of freshwater fish in central California. A cyprinid, the blackfish is the sole member of its genus.
The California roach is a cyprinid fish native to western North America and abundant in the intermittent streams throughout central California. Once considered the sole member of its genus, it has recently been split into a number of closely related species and subspecies.
The tule perch is a surfperch (Embiotocidae) native to the rivers and estuaries of central California. It is the sole member of its genus, and the only freshwater surfperch.
The hornyhead chub is a small species of minnow in the family Cyprinidae of order Cypriniformes. It mainly inhabits small rivers and streams of the northern central USA, up into Canada. The adults inhabit faster, rocky pools of rivers.
Uvas Creek is a 29.5-mile-long (47.5 km) mainly southward-flowing stream originating on Loma Prieta peak of the Santa Cruz Mountains, in Santa Clara County, California, United States. The creek descends through Uvas Canyon County Park into Uvas Reservoir near Morgan Hill, and on through Uvas Creek Preserve and Christmas Hill Park in Gilroy. Upon passing U.S. Highway 101 it is known as Carnadero Creek, shortly before the confluence with the Pajaro River at the Santa Clara County - San Benito County boundary.
Leuciscinae is a subfamily of the freshwater fish family Cyprinidae, which contains the true minnows.
The Sacramento pikeminnow, formerly known as the Sacramento squawfish, is a large cyprinid fish of California, United States. 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.
Mylopharodon conocephalus, known as the hardhead, is a freshwater ray-finned fish from the family Cyprinidae, the carps and minnows, which is endemic to California. It is the sole member of the monotypic genus Mylopharodon.
The scarlet shiner is a freshwater fish native to the eastern United States.
Peter B. Moyle is Distinguished Professor Emeritus in the Department of Wildlife, Fish and Conservation Biology and associate director of the Center for Watershed Sciences at the University of California, Davis. He has studied the ecology and conservation of fishes in freshwater and estuarine habitats in California (US) for over fifty years. He has a special interest in salmonid fishes and in the state's highly endemic freshwater and estuarine fish fauna. Moyle has authored or co-authored more than 270 peer-reviewed publications, including 10 books, and over 225 other publications, including ca. 75 blogs.
Seigler Canyon Creek is creek in Lake County, California.
Adobe Creek is a river that flows for 11 miles in a northeastern direction to Clear Lake in Lake County, California. Species that inhabit the river include the California roach.
Laviniinae is a clade of the subfamily Leuciscinae, treated as a subfamily of the freshwater fish family Leuciscidae by some authorities, which contains the true minnows. Members of this clade are known as western chubs or the western clade (WC) of minnows. As the name suggests, most members of this clade are found in western North America aside from Chrosomus, which is found in eastern North America.
Sacramento–San Joaquin is a freshwater ecoregion in California. It includes the Sacramento and San Joaquin river systems of California's Central Valley, which converge in the inland Sacramento–San Joaquin Delta. It also includes the mostly-closed Tulare Lake basin in the southern Central Valley, the rivers and streams that empty into San Francisco Bay, and the Pajaro and Salinas river systems of Central California which empty into Monterey Bay.
The Coastal Riffle Sculpin is a species of freshwater ray-finned fish belonging to the family Cottidae, the typical sculpins. It is endemic to the Coast Range Mountains of California, where it is found in streams draining to the west and southwest. This taxon was considered to be conspecific with the inland riffle sculpin until research published in 2020 by Peter B. Moyle and Matthew A. Campbell showed that it was a separate valid species which was split into two subspecies. One, C.o. pomo, found in the northern Russian River and north San Francisco Bay drainage; and the other, C.o. ohlone, in the southern Santa Clara Valley. The specific name honors the Ohlone people, a Native American group which lived around southern San Francisco Bay and the Santa Clara Valley.The Ohlone name refers to a group of over 50 people who interacted in these areas. It is not listed with a conservation status under the Endangered Species Act.
San Felipe Lake is a perennial natural lake located in the southern Santa Clara Valley, almost wholly in northern San Benito County with its western edge on the border with Santa Clara County, California. The lake is a critical wetland, rare plant, and wildlife resource in need of additional conservation and enhancement.
The Clear Lake hitch is a freshwater fish and a subspecies of the hitch. It is a cyprinid fish that is endemic to Clear Lake, California. They are large minnows that can grow to lengths that exceed 35 cm (14 in) standard length. The fish has a life cycle of four to six years. During the winter and spring, when the rains fill up dry rivers, they migrate up the lake's tributaries to spawn. In 2014, it was listed as threatened by the state of California. Local Pomo Tribes call Clear Lake hitch "chi" and harvested the fish during its spawning runs.