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White Perch
The white perch (''Morone americana'') is not a true Percidae, perch but is a fish of the temperate bass family, Moronidae, notable as a food and game fish in eastern North America. In some places it is referred to as "Silver Bass". The common name "white perch" is sometimes applied to the white crappie (''Pomoxis annularis''). Description Generally silvery-white in color, hence the name, depending upon habitat and size specimens have begun to develop a darker shade near the dorsal fin and along the top of the fish. This sometimes earns them the nickname "black-back". White perch have been reported up to in length and weighing . Ecology Although favoring brackish waters, it is also found in fresh water and coastal areas from the St. Lawrence River and Lake Ontario south to the Pee Dee River in South Carolina, and as far east as Nova Scotia. They are also found in the lower Great Lakes, Finger Lakes, Long Island Sound and nearby coastal areas, Hudson River, Hudson and Mohaw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johann Friedrich Gmelin
Johann Friedrich Gmelin (8 August 1748 – 1 November 1804) was a German natural history, naturalist, chemist, botanist, entomologist, herpetologist, and malacologist. Education Johann Friedrich Gmelin was born as the eldest son of Philipp Friedrich Gmelin in 1748 in Tübingen. He studied medicine under his father at University of Tübingen and graduated with a Master's degree in 1768, with a thesis entitled: ', defended under the presidency of Ferdinand Christoph Oetinger, whom he thanks with the words '. Career In 1769, Gmelin became an adjunct professor of medicine at University of Tübingen. In 1773, he became professor of philosophy and adjunct professor of medicine at University of Göttingen. He was promoted to full professor of medicine and professor of chemistry, botany, and mineralogy in 1778. He died in 1804 in Göttingen and is buried there in the Albanifriedhof, Albani cemetery with his wife Rosine Louise Gmelin (1755–1828, née Schott). Johann Friedrich Gm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hudson River
The Hudson River, historically the North River, is a river that flows from north to south largely through eastern New York (state), New York state. It originates in the Adirondack Mountains at Henderson Lake (New York), Henderson Lake in the town of Newcomb, New York, Newcomb, and flows south to the New York Bay , New York Bay, a tidal estuary between New York City, New York and Jersey City, Jersey City, before draining into the Atlantic Ocean , Atlantic Ocean. The river marks boundaries between several County (New York), New York counties and the eastern border between the U.S. states of New York and New Jersey , New Jersey. The lower half of the river is a tidal estuary, deeper than the body of water into which it flows, occupying the Hudson Fjord, an inlet that formed during the most recent period of North American Quaternary glaciation, glaciation, estimated at 26,000 to 13,300 years ago. Even as far north as the city of Troy, New York, Troy, the flow of the river chan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glycera (genus)
The genus ''Glycera'' is a group of polychaetes (bristle worms) commonly known as bloodworms. They are typically found on the bottom of shallow marine waters, and some species (e.g. common bloodworms) can grow up to in length. Although both are visually-similar and commonly-used as fishing bait, bloodworms are biologically-distinct from lugworms. Anatomy Bloodworms have a creamy pink color, as their pale skin allows their red body fluids that contain haemoglobin to show through. This is the origin of the name "bloodworm". At the 'head', bloodworms have four small antennae and small fleshy projections called parapodia running down their bodies. Bloodworms can grow up to in length. Bloodworms are carnivorous. They feed by extending a large proboscis that bears four hollow jaws. The jaws are connected to glands that supply venom which they use to kill their prey, and their bite is painful even to a human. They are preyed on by other worms, bottom-feeding fish, crustacea, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Razor Clam
Razor clam is a common name for long, narrow, saltwater clams (which resemble a closed straight razor in shape), including: * Atlantic jackknife clam, ''Ensis leei'' (syn. ''Ensis directus'') * Gould's razor shell, ''Solen strictus'' * Pacific razor clam, ''Siliqua patula'' *'' Pinna bicolor'', a species of large saltwater clam in the family ''Pinnidae'' * Razor shell, ''Ensis magnus'' (syn ''Ensis arcuatus'') * Rosy razor clam, ''Solecurtus strigilatus'' *'' Siliqua alta'', the northern or Arctic razor clam *'' Siliqua costata'', Atlantic razor clam *'' Solen marginatus,'' the grooved razor shell *''Sinonovacula constricta ''Sinonovacula constricta'', the constricted tagelus, Chinese razor clam or Agemaki clam, is a commercially important species of bivalve native to the estuaries and mudflats of China and Japan. It is extensively aquafarmed in China and other cou ...'', the Chinese razor clam See also Jackknife clam {{Animal common name Mollusc common names ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grass Shrimp
''Palaemon'' is a genus of caridean shrimp in the family Palaemonidae Palaemonidae is a family of shrimp in the order Decapoda. Many species are carnivores that eat small invertebrates, and can be found in any aquatic habitat except the deep sea. One significant genus is '' Macrobrachium'', which contains commerci .... Some species, including '' Palaemon macrodactylus'' and '' Palaemon orientis'', can inhabit fish ponds where they compete with fish for food and can therefore be considered pests. Species The following species are recognised in the genus ''Palaemon'': *'' Palaemon adspersus'' *'' Palaemon affinis'' *'' Palaemon africanus'' *'' Palaemon annandalei'' *'' Palaemon antennarius'' *†'' Palaemon antonellae'' *'' Palaemon antrorum'' *'' Palaemon argentinus'' *'' Palaemon atrinubes'' *'' Palaemon audouini'' *'' Palaemon australis'' *'' Palaemon camranhi'' *'' Palaemon capensis'' *'' Palaemon carinicauda'' *'' Palaemon carteri'' *'' Palaemon colossus' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fathead Minnow
Fathead minnow (''Pimephales promelas''), also known as fathead or tuffy, is a species of freshwater Actinopterygii, ray-finned fish belonging to the Family (biology), family Leuciscidae, the shiners, daces and minnows. The natural geographic range extends throughout much of North America, from central Canada south along the Rocky Mountains, Rockies to Texas, and east to Virginia and the Northeastern United States.Page, Lawrence M. and Brooks M. Burr (1991), ''Freshwater Fishes'', p. 129–130, Houghton Mifflin, New York, NY. This minnow has also been introduced to many other areas via bait bucket releases. Its golden, or Xanthochromism, xanthic, strain, known as the rosy-red minnow, is a very common feeder fish sold in the United States and Canada. This fish is also known for producing Schreckstoff (a distress signal). Physical description The fathead minnow in its wild form is generally dull olive-grey in appearance, with a dusky stripe extending along the back and side, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Umbra (fish)
''Umbra'' is a genus of mudminnows native to Europe and North America. It is the only extant member of the family Umbridae. Phylogenetic evidence suggests the North American and European clades split between the Late Cretaceous or early Paleogene, making this a rather ancient group. Species The currently recognized species in this genus are: * '' Umbra krameri'' Walbaum, 1792 (European mudminnow) * '' Umbra limi'' ( Kirtland, 1840) (central mudminnow) * ''Umbra pygmaea'' ( DeKay, 1842) (eastern mudminnow) The following fossil species are also known: * †'' Umbra euronota'' Schwarzhans ''et al''., 2024 - Middle Miocene of Ukraine otolith">otolith.html" ;"title="nowiki/>otolith">nowiki/>otolithref name=":1"> * † ''Umbra irtyshensis'' Sytchevskaya, 1968 * †'' Umbra irtyshensis">''Umbra irtyshensis'' Sytchevskaya, 1968 * †''Umbra longidorsalis'' Böhme, 2004 - Early Miocene">Umbra longidorsalis">Umbra irtyshensis">''Umbra irtyshensis'' Sytchevskaya, 1968 * †''Umbra lon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minnow
Minnow is the common name for a number of species of small freshwater fish, belonging to several genus, genera of the family Cyprinidae and in particular the subfamily Leuciscinae. They are also known in Ireland as wikt:pinkeen, pinkeens. While the common name can refer to a range of taxa, smaller fish in the subfamily Leuciscinae, Leusciscinae are considered by Angling, anglers to be "true" minnows. Types of minnows Bluntnose minnow (''Pimephales notatus''): The bluntnose minnow is a primary bait fish for Northern America, and has a very high tolerance for variable water qualities, which helps its distribution throughout many regions. The snout of the bluntnose minnow overhangs the mouth, giving it the bluntnose. There is a dark lateral line which stretches from the opercle to the base of the tail, where a large black spot is located. The average size of the adult is approximately . Common shiner (''Notropis cornutus)'': These fish are one of the most common type of bait fish ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Egg
An egg is an organic vessel grown by an animal to carry a possibly fertilized egg cell (a zygote) and to incubate from it an embryo within the egg until the embryo has become an animal fetus that can survive on its own, at which point the animal hatches. Most arthropods, vertebrates (excluding live-bearing mammals), and mollusks lay eggs, although some, such as scorpions, do not. Reptile eggs, bird eggs, and monotreme eggs are laid out of water and are surrounded by a protective shell, either flexible or inflexible. Eggs laid on land or in nests are usually kept within a warm and favorable temperature range while the embryo grows. When the embryo is adequately developed it hatches, i.e., breaks out of the egg's shell. Some embryos have a temporary egg tooth they use to crack, pip, or break the eggshell or covering. The largest recorded egg is from a whale shark and was in size. Whale shark eggs typically hatch within the mother. At and up to , the ostrich egg is the l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perch
Perch is a common name for freshwater fish from the genus ''Perca'', which belongs to the family Percidae of the large order Perciformes. The name comes from , meaning the type species of this genus, the European perch (''P. fluviatilis''). Many species of freshwater game fish more or less resemble perch, but belong to different genera. In fact, the exclusively saltwater-dwelling red drum (which belong to a different order Acanthuriformes) is often referred to as a "red perch", though by definition perch are freshwater species. 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. Species Most authorities recognize three species within the perch genus: * The European perch (''P. fluviatilis'') is primarily found in Europe, but a few can also be found in South Africa, and even as far east on the Southern hemisphere as Australia. This species is typically greenish in color with dark vertical ba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Walleye
The walleye (''Sander vitreus'', Synonym (taxonomy), synonym ''Stizostedion vitreum''), also called the walleyed pike, yellow pike, yellow pikeperch or yellow pickerel, is a freshwater perciform fish native to most of Canada and to the Northern United States. It is a North American close relative of the European zander, also known as the pikeperch. The walleye is sometimes called the yellow walleye to distinguish it from the blue walleye, which is a color morph that was once found in the southern Ontario and Quebec regions, but is now presumed extinct. However, recent genetic analysis of a preserved (frozen) 'blue walleye' sample suggests that the blue and yellow walleye were simply phenotypes within the same species and do not merit separate taxonomic classification. In parts of its range in English-speaking Canada, the walleye is known as a pickerel, though the fish is not related to the true Esox, pickerels, which are members of the family ''Esocidae''. It is also sometimes c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Egg Predation
Egg predation or ovivory is a feeding strategy in many groups of animals (ovivores) in which they consume eggs. Since a fertilized egg represents a complete organism at one stage of its Biological life cycle, life cycle, eating an egg is a form of predation, the killing of another organism for food. Egg predation is found widely across the animal kingdom, including in fish, birds, snakes, mammals, and arthropods. Some species are specialist egg predators, but many more are generalists which take eggs when the opportunity arises. Humans have accidentally or intentionally introduced egg predators such as Rat, rats to places that had been free of them, causing damage to native species such as ground-nesting seabirds. Predatory birds such as ravens and gulls have spread, threatening ground-nesting birds such as Centrocercus, sage grouse and terns. Measures to control such predators include the use of poisoned bait eggs. Definitions An ovivore or ovivorous animal is one that eats ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
