The freshwater drum, Aplodinotus grunniens, is a fish endemic to North and Central America. It is the only species in the genus Aplodinotus, and is a member of the family Sciaenidae. It is the only North American member of the group that inhabits freshwater for its entire life.Its generic name, Aplodinotus, comes from Greek meaning "single back", and the specific epithet, grunniens, comes from a Latin word meaning "grunting". It is given to it because of the grunting noise that mature males make. This noise comes from a special set of muscles within the body cavity that vibrate against the swim bladder. The purpose of the grunting is unknown, but due to it being present in only mature males, it is assumed to be linked to spawning.
The drum typically weighs 5–15 lb (2.3–6.8 kg). The world record was caught on Nickajack Lake in Tennessee, and weighed in at 54 lb 8 oz (24.7 kg). The freshwater drum is gray or silvery in turbid waters and more bronze or brown colored in clearer waters. It is a deep bodied fish with a divided dorsal fin consisting of 10 spines and 29–32 rays.
The Freshwater drum is also called shepherd's pie, gray bass,Gasper goo, Gaspergou, gou, grunt, grunter, grinder, wuss fish, gooble gobble and croaker. It is commonly known as sheephead or sunfish in parts of Canada, the United Kingdom, and the United States.
Freshwater drum are the only North American member of their family to exclusively inhabit freshwater (freshwater family members in genera Pachypops , Pachyurus , Petilipinnis and Plagioscion are from South America,while Boesemania is Asian ). Their great distribution range goes as far north as the Hudson Bay, and reaches as far south as Guatemala. Their longitudinal distribution goes as far east as the eastern Appalachians and stretches as far west into Texas, Kansas, and Oklahoma. Freshwater drum are considered to be one of the most wide-ranging species in North America.
The freshwater drum prefers clear water, but it is tolerant of turbid and murky water. They prefer the bottom to be clean sand and gravel substrates.
The diet of the freshwater drum is generally benthic and composed of macroinvertebrates (mainly aquatic insect larvae and bivalve mussels), as well as small fish in certain ecosystems.Freshwater drum show distinct seasonal differences in their diet. In April and May, the drum feeds on dipterans. During these months, dipterans make up about 50 percent of the freshwater drum's diet. In August through November, they tend to eat fish (which are primarily young-of-the-year gizzard shad). The percentage of fish in their diet at this time ranges from 52-94 percent. Other items in the drum's diet are mollusks and crayfish. Freshwater drum tend to hang out with walleye.
The freshwater drum competes with several organisms. During its early stages in Lake Erie, it has been shown to compete with yellow perch, the trout-perch, and the emerald shiner.During its adult lifetime, it competes with yellow perch and silver chub in deep water, and competes with black bass in the shoal areas.
Predators on drum include humans and other fish. During its first year, the freshwater drum serves as a forage fish for many species of predatory fish. These include smallmouth bass, walleye, and many other piscivores.After its first year, the primary predators on freshwater drum are humans. The drum is an important commercial crop on the Mississippi River, but in other areas it constitutes only a small portion of the commercial catch. Consistent with other Sciaenids, freshwater drum are strongly nocturnal with the bulk of most catches being derived from night angling/sampling. Commercial fisheries are present for this species, although market price tends to be quite low. Thus, many freshwater drum are harvested as bycatch from targeted higher-value species.
There has been some research on the freshwater drum's impact on the invasive Zebra mussel in northern lakes and rivers. Zebra mussels are consumed by freshwater drum once they reach a length of 25 cm (9.8 in), but drum under 35 cm (14 in) in length only eat small mussels and reject the larger ones. The fish larger than 35 cm (14 in) exhibit less selectivity and consume mussels relative to their availability in lakes. These larger fish are not restricted by their ability to crush the zebra mussels, but they are restricted by the size of the clumps that they can remove. Though the drum do eat zebra mussels, they are not having an impact on the spread of this invasive species. Though they do not control the population of zebra mussels, they do contribute to a high mortality in the zebra mussels.
During the summer, freshwater drum move into warm, shallow water that is less than 33 ft (10 m) deep. The freshwater drum then spawn during a six to seven-week period from June through July when the water reaches a temperature of about 65 °F (18 °C). During the spawn, females release their eggs into the water column and males release their sperm. Fertilization is random. Males generally reach sexual maturity at four years, whereas females reach maturity at five or six years. Females from six to nine years old have a clutch size of 34,000 to 66,500 eggs and they spawn in open water giving no parental care to their larvae. The eggs then float to the top of the water column and hatch between two and four days. Due to the broadcasting of eggs in open water and lack of parental care, many eggs and larvae fall victim to predation upon hatching, the pro-larvae average 3.2 mm (0.13 in) long. The post larval stage begins about 45 hours after hatching and a length of 4.4 mm (0.17 in) is attained.
Females grow at a faster rate than the males and adult characteristics start to form at a length of 15 mm (0.59 in). Females continue to outgrow the male throughout their lives reaching a length of 12 to 30 in (30 to 76 cm). Usually the freshwater drum weighs 2–10 lb (0.91–4.54 kg), but they can reach well over 36 lb (16 kg). Freshwater drum are long-lived and have attained maximum ages of 72 years old in Red Lakes, Minnesota and 32 years old in the Cahaba River, Alabama. Using sectioned otoliths from archaeological sites near Lake Winnebago, Wisconsin, freshwater drum have attained the age 74 years.[ citation needed ] Though they can reach a very old age, the average age of a freshwater drum is between 6 and 13 years.
There are not currently any management practices for the species. The freshwater drum is not federally or state listed by any states. Although the commercial harvest is up to 1 million pounds per year, they are in no danger of overharvest. 300,000 lb (140,000 kg) in recent years. Due to its abundance, many states allow bowfishing and other non-conventional means to harvest the fish.In the Mississippi River alone, the commercial catch has reached about
Perch is a common name for fish of the genus Perca, freshwater gamefish belonging to the family Percidae. The perch, of which three species occur in different geographical areas, lend their name to a large order of vertebrates: the Perciformes, from the Greek: πέρκη, simply meaning perch, and the Latin forma meaning shape. Many species of freshwater gamefish more or less resemble perch, but belong to different genera. In fact, the exclusively saltwater-dwelling red drum is often referred to as a red perch, though by definition perch are freshwater fish. Though many fish are referred to as perch as a common name, to be considered a true perch, the fish must be of the family Percidae.
The white perch is not a true perch but is, rather, a fish of the temperate bass family, Moronidae, notable as a food and game fish in eastern North America. In some locales it is referred to incorrectly as "silver bass".
The burbot is the only gadiform (cod-like) freshwater fish. It is also known as bubbot, mariah, freshwater ling, the lawyer, coney-fish, lingcod, freshwater cusk, and eelpout. The species is closely related to the marine common ling and the cusk. It is the only member of the genus Lota. For some time of the year, the burbot lives under ice, and they require frigid temperatures to breed.
The American paddlefish is a species of basal ray-finned fish closely related to sturgeons in the order Acipenseriformes. Fossil records of paddlefish date back over 300 million years, nearly 50 million years before dinosaurs first appeared. American paddlefish are smooth-skinned freshwater fish commonly called paddlefish, but are also referred to as Mississippi paddlefish, spoon-billed cats, or spoonbills. They are one of only two extant species in the paddlefish family, Polyodontidae. The other is the critically endangered Chinese paddlefish endemic to the Yangtze River basin in China. American paddlefish are often referred to as primitive fish, or relict species because they retain some morphological characteristics of their early ancestors, including a skeleton that is almost entirely cartilaginous, and a paddle-shaped rostrum (snout) that extends nearly one-third their body length. They have been referred to as freshwater sharks because of their heterocercal tail or caudal fin, which resembles that of sharks. American paddlefish are a highly derived fish because they have evolved with adaptations such as filter feeding. Their rostrum and cranium are covered with tens of thousands of sensory receptors for locating swarms of zooplankton, which is their primary food source.
The zebra mussel is a small freshwater mussel. This species was originally native to the lakes of southern Russia and Ukraine. However, the zebra mussel has been accidentally introduced to numerous other areas, and has become an invasive species in many countries worldwide. Since the 1980s, they have invaded the Great Lakes and the Hudson River.
The zander is a species of fish from freshwater and brackish habitats in western Eurasia. It is a popular game fish and has been introduced to a variety of localities outside its native range.
The warmouth, is a freshwater fish of the sunfish family (Centrarchidae) that is found throughout the eastern United States. Other local names include molly, redeye, goggle-eye, red-eyed bream, and strawberry perch.
The green sunfish is a species of freshwater fish in the sunfish family (Centrarchidae) of order Perciformes. A panfish popular with anglers, the green sunfish is also kept as an aquarium fish by hobbyists. They are usually caught by accident, while fishing for other game fish. Green sunfish can be caught with live bait such as nightcrawlers, waxworms, mealworms, and blood worms. Grocery store baits such as pieces of hot dog or corn kernels can even catch fish. Small lures have been known to occasionally catch green sunfish. They can be caught with fly fishing tackle.
The quagga mussel is a species of freshwater mussel, an aquatic bivalve mollusk in the family Dreissenidae. It has an average life span of 3 to 5 years.
The tench or doctor fish is a fresh- and brackish-water fish of the cyprinid family found throughout Eurasia from Western Europe including the British Isles east into Asia as far as the Ob and Yenisei Rivers. It is also found in Lake Baikal. It normally inhabits slow-moving freshwater habitats, particularly lakes and lowland rivers. In Germany, Austria and Switzerland, the tench is called Schlei.
The sauger is a freshwater perciform fish of the family Percidae which resembles its close relative the walleye. They are members of the largest vertebrate order, Perciformes. They are the most migratory percid species in North America. Saugers obtain two dorsal fins, the first is spiny and the posterior dorsal fin is a soft-rayed fin. Their paired fins are in the thoracic position and their caudal fin is truncated which means squared off at the corners, a characteristic of the family Percidae. Another physical characteristic of Saugers are their ctenoid scales which is common in advanced fishes. Saugers have a fusiform body structure, and as a result saugers are well adapted predatory fishes and are capable of swimming into fast currents with minimal drag on their bodies. They may be distinguished from walleyes by the distinctly spotted dorsal fin, by the lack of a white splotch on the caudal fin, by the rough skin over their gill, and by their generally more brassy color, or darker color in some regions. The average sauger in an angler's creel is 300 to 400 g in weight.
The silver perch is a medium-sized freshwater fish of the family Terapontidae endemic to the Murray-Darling river system in south-eastern Australia.
The lake sturgeon, also known as the rock sturgeon, is a North American temperate freshwater fish, one of about 25 species of sturgeon. Like other sturgeons, this species is an evolutionarily ancient bottom feeder with a partly cartilaginous skeleton, an overall streamlined shape and skin bearing rows of bony plates on its sides and back, resembling an armored torpedo. The fish uses its elongated, spade-like snout to stir up the substrate and sediments on the beds of rivers and lakes while feeding. The lake sturgeon has four purely sensory organs that dangle near its mouth. These organs, called barbels, help the sturgeon to locate bottom-dwelling prey. Lake sturgeons can grow to a relatively large size, topping 7.25 ft long and weighing over 240 lb (108 kg).
The bigmouth buffalo is a fish native to North America. It is the largest North American species in the Catostomidae or "sucker" family, and is one of the longest-lived freshwater fishes, capable of living beyond 110 years. It is commonly called the gourd head, redmouth buffalo, buffalofish, bernard buffalo, roundhead, or brown buffalo,. Despite the superficial similarity, the bigmouth buffalo is not a carp, nor is any other catostomid.
Perca fluviatilis, commonly known as the common perch, European perch, redfin perch, big-scaled redfin, English perch, Eurasian perch, Eurasian river perch or in Anglophone parts of Europe, simply the perch, is a predatory species of the freshwater perch native to Europe and northern Asia. The species is a popular quarry for anglers, and has been widely introduced beyond its native area, into Australia, New Zealand, and South Africa. They have caused substantial damage to native fish populations in Australia and have been proclaimed a noxious species in New South Wales.
The spectacle case pearly mussel or spectacle case is a species of bivalve in the family Margaritiferidae. It is endemic to the United States. The spectaclecase is a freshwater mussel that the U.S. Fish and Wildlife Service listed as an endangered species.
Leptodea leptodon, the scaleshell mussel or scale shell, is a species of freshwater mussel in the family Unionidae, the river mussels. This aquatic bivalve mollusk has disappeared from much of its historical range. It is endemic to the United States, where it is now present in four or fewer states; it is only found with any regularity in Missouri. It is a federally listed endangered species of the United States.
The winged mapleleaf, also known as false mapleleaf, or hickory nut shell, and with the scientific name Quadrula fragosa, is a species of freshwater mussel. It is an aquatic bivalve mollusk in the family Unionidae, the river mussels. It is endemic to the United States.
A lucky stone is actually the unique ear bone or otolith of a freshwater drum, also known as the sheephead fish. The fish's otoliths are quite large and look almost polished and ivory-like. In times past they have been worn as protective amulets, made into jewelry, and traded into areas far from the fish's native range. Lucky stones (otoliths) have been found at ancient archaeological sites, where they are thought to have been used as good luck charms to ward off illness.
The lake whitefish is a species of freshwater whitefish from North America. Lake whitefish are found throughout much of Canada and parts of the northern United States, including all of the Great Lakes. The lake whitefish is sometimes referred to as a "humpback" fish due to the small size of the head in relation to the length of the body. It is a valuable commercial fish, and also occasionally taken by sport fishermen. Smoked, refrigerated, vacuum-packed lake whitefish fillets are available in North American grocery stores. Other vernacular names used for this fish include Otsego bass, Sault whitefish, gizzard fish, common whitefish, eastern whitefish, Great Lakes whitefish, humpback whitefish, inland whitefish and whitefish.