The burbot, also known as bubbot, mariah, loche, cusk, freshwater cod, freshwater ling, freshwater cusk, the lawyer, coney-fish, lingcod, or eelpout, is a species of coldwater ray-finned fish native to the subarctic regions of the Northern hemisphere. It is the only member of the genus Lota, and is the only freshwater species of the order Gadiformes. The species is closely related to marine fish such as the common ling and cusk, all of which belong to the family Lotidae (rocklings).
The longear sunfish is a freshwater fish in the sunfish family, Centrarchidae, of order Perciformes. It is native to the area of eastern North America stretching from the Great Lakes down to northeastern Mexico. The longear sunfish reaches a maximum recorded length of about 24 cm (9.4 in), with a maximum recorded weight of 790 g (1.74 lb). Most do not live beyond six years. The longear sunfish is quite colorful, with an olive to rusty-brown back, bright orange belly and vermiculate blue-green bars on the sides of its head, the latter two features most pronounced in breeding males. A unique characteristic of longear sunfish is their elongated operculum flap, giving an appearance of a "long ear". It is black and often has a white margin. The pectoral fin is relatively short and would not reach the snout if it were reflected anteriorly. In breeding males, iridescent blue spots develop on the dorsum and sides and the fin membranes turn orange in all fins except the ventral ones, which may be blue to black, and the pectoral ones. Lepomis megalotis can be distinguished from closely related dollar sunfish L. marginatus by a greater number of cheek scale rows, by having one to two additional pectoral fin rays and by the slope of the opercular flap, which is distinctly upward in L. marginatus but is closer to horizontal in males of L. megalotis, although female and subadult L. megalotis may have upward slanting opercular flaps.
The longnose sucker is a species of cypriniform freshwater fish in the family Catostomidae. It is native to North America from the northern United States to the top of the continent. It is also found in Russia in rivers of eastern Siberia, and this one of only two species of sucker native to Asia.
The black redhorse is a species of freshwater fish endemic to Ontario and the eastern half of the United States, where it lives in streams and small to medium rivers.
The golden redhorse is a species of freshwater fish endemic to Ontario and Manitoba in Canada and the Midwestern, southern, and eastern United States. It lives in calm, often silty or sandy waters in streams, small to large rivers, and lakes.
The shorthead redhorse is a wide-ranging species in North America. The shorthead redhorse is native to central and eastern North America. However, its range has expanded to include areas like the Hudson estuary and Grayson County, Texas. It inhabits small to large rivers and lakes, and lives in the benthic zone. Shorthead redhorse feed on benthic invertebrates and can consume plant material from the benthic environment that it inhabits. When it spawns, shorthead redhorse move into more shallow streams and spawn over gravel or rocky shoals. They will also spawn in springs with swift moving water. The shorthead redhorse is important to humans because it is a game fish. It is also important to anglers because of its role in the ecosystem; it is prey for larger game fish such as northern pike and muskellunge.
The tangerine darter or river slick is a small species of freshwater ray-finned fish, a darter from the subfamily Etheostomatinae, part of the family Percidae, which also contains the perches, ruffes and pikeperches. It is found in the eastern United States. It grows to a length of 4.3 to 7.1 inches, males being bright orange-red while females are yellow. It is insectivorous, picking insect larvae off aquatic plants and the riverbed, and sometimes rolling small stones over to expose prey. It breeds in late spring and early summer, typically in shallow sandy or gravelly riffles. Pollution and habitat degradation may be a problem in parts of its range; however, it is a fairly common fish with a wide range and the International Union for Conservation of Nature has classified its conservation status as being of "least concern".
The Niangua darter is a species of freshwater ray-finned fish, a darter from the subfamily Etheostomatinae, part of the family Percidae, which also contains the perches, ruffes and pikeperches. It is endemic to Missouri, United States. It is found only in the Osage River Basin of central Missouri where its range historically included the Sac River, Pomme de Terre River, Niangua River, Big Tavern Creek, and Maries River. It is a federally listed threatened species of the United States.
The Bayou darter is a rare species of freshwater ray-finned fish, a darter from the subfamily Etheostomatinae, part of the family Percidae, which also contains the perches, ruffes and pikeperches. It is endemic to western Mississippi in the United States, where it is found only in Bayou Pierre and its tributaries. Its typical habitat is fast-flowing creeks and streams, in riffles and in areas between riffles with firm gravel bottoms. It feeds on small insects and their larvae. Breeding probably takes place twice a year, in spring and late summer. The population of this fish is declining due to loss of suitable habitat. This is caused by siltation and pollution, particularly erosion caused by changes in land use. The International Union for Conservation of Nature has assessed its conservation status as being "endangered".
The Louisiana pearlshell, Margaritifera hembeli, is a rare species of bivalve mollusk in the family Margaritiferidae. This freshwater mussel is native to Louisiana in the United States, and was previously present also in Arkansas. It grows to a length of about 10 cm (4 in) and lives on the sand or gravel stream-bed in riffles and fast flowing stretches of small streams. Its life cycle involves a stage where it lives parasitically inside a fish. This mollusk is sensitive to increased sedimentation and cannot tolerate impoundments. Because of its limited range and its population decline, the International Union for Conservation of Nature has rated this mollusk as being "critically endangered".
The channel darter is a species of freshwater ray-finned fish, a darter from the subfamily Etheostomatinae, part of the family Percidae, which also contains the perches, ruffes and pikeperches. It is native to North America where it typically occurs in the sandy or gravelly shallows of lakes and in small and medium-sized rivers in riffles over sand, gravel or rock bottoms. It is a small fish ranging from 34 to 72 mm in length, olive brown with darker speckles and sometimes with a dark spot below the eye and dark blotches along the flank. It feeds mostly on insect larvae and other small invertebrates and breeds in small streams. This species is listed as threatened by the Canadian Species at Risk Act (SARA) but overall it has a wide range and numerous sub-populations and the International Union for Conservation of Nature has rated it as a "least concern species".
The blacktail redhorse is a species of ray-finned fish in the genus Moxostoma. The blacktail redhorse occupies North America, being located throughout Mississippi River tributaries on the former Mississippi Embayment, ranging from Southern Kentucky to Galveston Bay in Texas.
The Alabama hog sucker is a species of fish in the family Catostomidae, the suckers. It is native to several river systems in the southeastern United States. Its range includes much of the state of Alabama and extends into parts of Mississippi, Tennessee, and Georgia.
The creek chubsucker is a freshwater fish of the sucker family (Catostomidae).
The Cumberland snubnose darter is a species of freshwater ray-finned fish, a darter from the subfamily Etheostomatinae, part of the family Percidae, which also contains the perches, ruffes and pikeperches. This species is found in the middle Cumberland River drainage in Tennessee, Kentucky, Virginia, North Carolina, Georgia, and Alabama. It is absent in reaches above the Big South Fork, rare in North Carolina, and absent in western tributaries of the Tennessee River. While research on the ecology of E. atripinne is not extensive, what is known is they are usually found in small to medium freshwater streams in gravel riffle areas where their eggs can attach to the substrate and be left unguarded. E. atripinne can be found within a wide range of depths in its environment, leading its being classified as benthopelagic. While its global status is secure, the American Fisheries Society labels it with a status of “Special Concern”.
The holiday darter is a species of freshwater ray-finned fish, a darter from the subfamily Etheostomatinae, part of the family Percidae, which also contains the perches, ruffes and pikeperches. It is found in the southeast US water system, with disjunctive populations throughout Alabama, Georgia, and Tennessee. It is also located in the Coosa River / Choccolocco Creek watershed which begins in Tennessee and far west Georgia, then enters Alabama. Its diet, close to other members of the subgenus Ulocentra, consists of small insects, including midges, black fly larvae, and small crustaceans. The two subspecies inhabit small to medium-sized gradient-rich streams. They are often found in fast-moving streams with large boulders, gravel, cobbles, and sand. They can be found in the margins between these large boulders, and use the boulders for protection from predators and for the females to attach eggs. The holiday darter has very vibrant coloration, but will display even more brilliant coloration during or before spawning. Spawning takes place during the spring, usually around April or May. This species is state listed in Georgia as threatened. One of the disjunct populations is located in the Talladega National Forest, which results in it being protected from human encroachment. The separate populations can make it difficult to determine the exact population count.
Etheostoma rufilineatum, the redline darter, is a species of freshwater ray-finned fish, a darter from the subfamily Etheostomatinae, part of the family Percidae, which also contains the perches, ruffes and pikeperches. It is endemic to the southeastern United States.
The white sucker is a species of freshwater cypriniform fish inhabiting the upper Midwest and Northeast in North America, but it is also found as far south as Georgia and as far west as New Mexico. The fish is commonly known as a "sucker" due to its fleshy, papillose lips that suck up organic matter and aufwuchs from the bottom of rivers and streams.
The Roanoke hogsucker is a freshwater ray-finned fish found in the upper and middle Roanoke River basin in North Carolina and Virginia. It is very similar to and lives in the same area as the northern hogsucker. They are in the sucker family, Catostomidae. Many anglers enjoy catching them due to their ability to put up a good fight. They are not considered a game fish and are considered significantly rare due to their limited distribution.
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.
