Inland riffle sculpin | |
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Scientific classification | |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Actinopterygii |
Order: | Scorpaeniformes |
Family: | Cottidae |
Genus: | Cottus |
Species: | C. gulosus |
Binomial name | |
Cottus gulosus (Girard, 1854) | |
Synonyms [2] | |
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The inland riffle sculpin (Cottus gulosus) is a species of fish in the family Cottidae. It is found in the United States, inhabiting the lower Columbia River drainage in Washington, to Morro Bay in California. It is also found in the Puget Sound drainage in Washington. It reaches a maximum length of 11.0 cm. [2] It prefers rocky riffles of headwaters and creeks.
The inland riffle sculpin was first formally described as Cottopsis gulosus by the French biologist Charles Frédéric Girard with its type locality given as the San Joaquin River in California. [3] This species is classified by some authorities in the subgenus Cottopsis. [4]
Inland riffle sculpins have a brown/tan coloration mottled with dark brown spots and reddish hues around their fins. They have large mouths with a single median chin pore, and often times will feature joined dorsal fins. [5] Despite not being considered particularly definitive in their appearance, riffle sculpins can still be identified through notes regarding specific spotting and ray numbers. In addition to their mottled color, riffle sculpins have a large black spot near the end of the first dorsal fin. They have 16-19 rays in their second dorsal fin, 15-16 rays in each of their pectoral fins, and 12-16 rays in their anal fin. Spawning male riffle sculpins can be seen to have a darker appearance coupled with an orange hue at the edge of the first dorsal fin. [6]
Inland riffle sculpins can often be found in headwater streams with riffles. When cohabiting alongside prickly sculpin, riffle sculpin choose to move towards the cooler areas of the stream. [7] However, they are also found to have a preference for permanent streams with stable temperatures of 25-26 °C. When available, riffle sculpins will move towards areas of cover, such as rocks or overhanging banks. [5]
Riffles act as preferred habitats to multiple species due to the many prey organisms that live in the area. However, the division of habitat within riffle sculpin and other species such as the speckled dace is driven primarily by temperature, as the metabolic rates of the sculpin rapidly increase alongside it. [8]
Inland riffle sculpins maintain a diet primarily built of benthic invertebrates and active insect larvae. This includes insects like mayflies and caddisflies. If easily available, riffle sculpins will prey on small fish and amphipods, typically feeding during the night. [6]
The spoonhead sculpin is a species of freshwater ray-finned fish belonging to the family Cottidae, the typical sculpins. This species is widespread in northeastern North America.
Cottus is a genus of the mainly freshwater ray-finned fishes belonging to the family Cottidae, the typical sculpins. They are often referred to as the "freshwater sculpins", as they are the principal genus of sculpins to be found in fresh water. They are native to the Palearctic and Nearctic.
The mottled sculpin is a species of freshawater ray-finned fish belonging to the family Cottidae, the typical sculpins. This species has a wide but scattered North American distribution.
The snubnose sculpin is a species of marine ray-finned fish belonging to the family Cottidae, the typical sculpins. This fish is found in the eastern Pacific Ocean.
The Pacific staghorn sculpin is a species of marine ray-finned fish belonging to the family Cottidae, the typical sculpins. This species is found in the eastern Pacific Ocean. It is the only species in the monospecific genus Lepidocottus.
The European bullhead is a freshwater fish that is widely distributed in Europe, mainly in rivers. It is a member of the family Cottidae, a type of sculpin. It is also known as the miller's thumb, freshwater sculpin, common bullhead, and cob.
Myoxocephalus scorpioides, the Arctic sculpin or northern sculpin, is a species of marine ray-finned fish belonging to the family Cottidae, the typical sculpins. This fish is found in the Arctic Ocean.
The woolly sculpin is a species of marine ray-finned fish belonging to the family Cottidae, the typical sculpins. It is found in the eastern Pacific Ocean, where it occurs along the coastline of California and Baja California.
Cottus rondeleti is a species of freshwater ray-finned fish belonging to the family Cottidae, the typical sculpins. This species is endemic to the coastal Hérault drainage of Southern France. The total known distribution comprises three distinct short stretches of stream, and the species considered critically endangered because of threat of drought that is promoted by water extraction and potentially by climate change.
The Sakhalin sculpin is a species of amphidromous ray-finned fish belonging to the family Cottidae, the typical sculpins. It is found in eastern Russia to northern Japan. It reaches a maximum length of 20.8 cm. The Sakhalin sculpin was first formally described in 1904 by the Russian zoologist Peter Yulievich Schmidt with its type locality given as the Lyutoga River on Sakhalin. This species is sometimes placed in the subgenus Cephalocottus. The specific name is a misspelling of Ambystoma, the axolotl combined with opsis, meanning "having the look of", and Schmidt described it as having a head that is “strongly dorsoventrally depressed, wide, nearly flat dorsally, abruptly sloping laterally, similar to the head of an axolotl” (translation).
The shorthead sculpin is a species of fish in the family Cottidae. Shorthead Sculpins are bottom-dwelling small fish, typically sizing around 13 to 15 cm long. They have large heads and fanlike pectoral fins. They have 7-9 dorsal spines, 15-19 dorsal soft rays, and 10-14 anal soft rays. Narrow caudal peduncle. Palatine teeth and coloration being dark brown and yellow.
Cottus rhenanus is a species of freshwater ray-finned fish belonging to the family Cottidae, the typical sculpins. It is found in France, Belgium, Germany, Luxembourg, and the Netherlands. It inhabits the Rhine and Meuse river drainages. It reaches a maximum length of 10.0 cm. It prefers streams with clear, cool, moderate to swift water and stone substrate. Here, it mostly occurs in the shallow parts of streams. This species was described as a separate species from the European bullhead in 2005 by Jörg Freyhof, Maurice Kottelat and Arne W. Nolte. The specific name rhenatus means belonging to Rhenus, the Latin name of the River Rhine.
The Columbia sculpin is a species of fish in the family Cottidae. It is found in the United States and Canada, inhabiting the Columbia River drainage and Harney Basin in Oregon, British Columbia, Idaho, Washington, and Nevada. It reaches a maximum length of 11.2 cm. It prefers rocky riffles of headwaters and creeks.
The Ozark sculpin is a species of ray-finned fish belonging to the family Cottidae, the typical sculpins. It is endemic to Missouri,United States. Inhabiting the Osage, Gasconade, and Black river drainages in Missouri. It reaches a maximum length of 14.0 cm. It prefers rocky riffles of headwaters and creeks.
The reticulate sculpin is a species of freshwater ray-finned fish belonging to the family Cottidae, the typical sculpins. It is found in the United States, inhabiting Pacific Slope drainages from the Snohomish River and Puget Sound in Washington to the Rogue River system in Oregon and California. It reaches a maximum length of 10.0 cm. This sculpin occurs in a variety of habitats, but mainly occurs in the slower sections of coastal headwaters, creeks, and small rivers. It prefers faster water with rubble or gravel substrate, but occurs in pools and along stream edges when other sculpin species are present. Often it occurs in clear cold water in forested areas. Its ideal habitat is cold creeks in old-growth forest, with plenty of riffles and runs. This species is tolerant of variable water temperatures and salinities. Where other sculpin species are common, spawning occurs in slow-flowing areas; where other sculpin species are rare or absent, spawning usually occurs in riffles.
Cottus transsilvaniae is a species of freshwater ray-finned fish belonging to the family Cottidae, the typical sculpins. It is endemic to Romania in the upper Arges River in the Danube drainage. It reaches a maximum length of 9.7 cm. It prefers rocky shoals and riffles of small upland streams. his species was described as a separate species from the European bullhead in 2005 by Jörg Freyhof, Maurice Kottelat and Arne W. Nolte. The specific name transsilvaniae means “of Transsilvania”, the Latin name of the Transylvania.
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.
Enophrys diceraus, the antlered sculpin, is a species of marine ray-finned fish belonging to the family Cottidae, the typical sculpins. This species occurs in the northern Pacific Ocean.
The Arctic staghorn sculpin is a species of marine ray-finned fish belonging to the family Cottidae, the typical sculpins. This sculpin is found in the Arctic Ocean and the northern Atlantic Ocean.