River Specimen
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 Green botryoidal fluorite specimen from Orange River  US $13.77
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 Red quartz crystal mineral specimen from Orange River US $27.40
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 Lepidolite Mineral Specimen from Orange River Region US $30.71
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Catfish, common name for about 2200 species of fishes, of which some 1200 are South American. Two families are primarily marine. All other families inhabit fresh water. Catfishes are mostly nocturnal scavengers, living near the bottom in shallow waters.
The name catfish is derived from the feelers, or barbels, that extend from each side of the upper jaw of the fish and, in some species, from the lower jaw also, suggesting the whiskers of a cat. The dorsal and pectoral fins are often edged with sharp spines, in some cases poisonous, which are used in defense and can inflict severe wounds. Members of several catfish families in South America are covered with bony plates. A European species, the sheatfish, or wels, is the largest catfish, reportedly reaching a weight of 290 kg (650 lb) and a length of almost 4 m (almost 13 ft).
The blind catfish, found in caverns in eastern Pennsylvania, has atrophied eyes, and the electric catfish of the Nile River and tropical central Africa is capable of giving an electric shock. Another odd catfish, the so-called walking catfish, originally occurred in eastern India and Southeast Asia. In 1968, it was discovered near Boca Raton, Florida, following its import by tropical-fish dealers.
Its maximum length is 56 cm (22 in). In "walking" to areas of deeper water in dry spells, this catfish moves across land (between bodies of water) by a slithering motion combined with a thrashing of its tail. In addition, a stout spine in each pectoral fin digs into the ground to help balance and propel the fish. It is able to breathe air by means of a modified gill arch that forms an air chamber.
Some species of catfish are believed to be among the largest freshwater fish in the world. A specimen of giant catfish, (Pangasianodon gigas) netted in 2005 in the Mekong River in northern Thailand, reportedly weighed 293 kg (646 lb) and measured 2.7 m (9 ft) in length.
Of the numerous species of North American catfishes, the bullhead is commonly fished for eating. Of greatest commercial importance are fishes in the Mississippi River valley and the Gulf states, some of which weigh as much as 70 kg (as much as 150 lb). The blue catfish, or chucklehead, and the channel catfish, the flesh of which is esteemed as equal to that of black bass, form the major part of the harvest.
Catfishes currently account for about one-half of the aquaculture production in the United States. Mississippi, Alabama, Arkansas, California, and Louisiana all have extensive catfish farms; there are a total of about 60,700 hectares (about 150,000 acres) of catfish farms in these and other states. The United States production of farm-raised catfishes increased from less than 90 million kg (less than 200 million lb) in 1985 to more than 200 million kg (more than 450 million lb) in 1992, and commercial sales of farmed catfishes were estimated at about 200 million kg (about 450 million lb) in 1993. New technologies such as genetic improvement, recirculating systems, and control of diseases may continue to promote the growth of this industry.
SCIENTIFIC CLASSIFICATION:
Catfishes make up the order Siluriformes. The two marine families are Ariidae and Plotosidae. The sheatfish is classified as Silurus glanis, the blind catfish as Gronias nigrilabris, the electric catfish as Malapterurus electricus, and the walking catfish as Clarias batrachus. Bullhead belong to the family Ictaluridae. The blue catfish is classified as Ictalurus furcatus, and the channel catfish as Ictalurus punctatus.
Channel Catfish
The channel catfish is a commercially important food fish. Its tasty flesh has been compared to black bass. Originally found in freshwater streams and lakes in central and eastern parts of the United States and southern Canada, channel catfish have been introduced widely throughout the United States. Catfish farming, or raising catfish commercially in large ponds, is expanding rapidly in the southeastern United States.
Brown Bullhead
Valued for food and sport, the brown bullhead, a North American species of catfish, lives in many freshwater streams in the eastern United States. Usually measuring less than 46 cm (18 in) long, the brown bullhead exhibits the typical whiskerlike feelers that give the catfish its name. The brown bullhead is considered the most commercially important of all catfish.
Catfish Walking on Land
Catfish (named for whiskerlike feelers on their jaws) are a diverse collection of tenacious fish that have adapted to life in a variety of environments. There are more than 2000 different species. One type of catfish, Clarias batrachus, commonly known as the walking catfish, is native to shallow ponds in eastern India and Southeast Asia. When droughts cause shallow ponds to dry up, the walking catfish is capable of traveling across land to move to deeper ponds. It uses its pectoral fins and tail to slither across the ground, or "walk," in search of a suitable new pond, surviving on oxygen stored in an air chamber in its gill arch.
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Specimen Bond Certificate For $1000, New York Central and Hudson River Railroad Company, c.1900 $49.99 Specimen Bond Certificate For $1000, New York Central and Hudson River Railroad Company, c.1900 - Giclee Print |
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Pyromorphite Specimen $24.99 Mark Schneider Pyromorphite Specimen - Photographic Print |
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Radiohead - Test Specimen $24.99 Radiohead - Test Specimen - T-Shirt |
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Cirrhosis Liver Specimen $29.99 Cirrhosis Liver Specimen - Photographic Print |
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Quartz Specimen (Sio2) $24.99 Mark Schneider Quartz Specimen (Sio2) - Photographic Print |
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Italian Specimen Table Top $39.99 Italian Specimen Table Top - Giclee Print |
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The Practical Guide To Catching Specimen Carp $9.99 The Practical Guide To Catching Specimen Carp |
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Shopzeus USA zeusd1EPST1253492 Specimen Container Extra Large $31.1 Specimen container extra large |
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The River $14.99 The River |
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Specimen of Hindu Sculpture $19.99 Baron De Montalemert Specimen of Hindu Sculpture - Premium Poster |
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July: Specimen of a Portrait, c.1878 $84.99 James Tissot July: Specimen of a Portrait, c.1878 - Framed Art Print |
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An Immature Specimen of Lion Fish $24.99 Andrea Ferrari An Immature Specimen of Lion Fish - Photographic Print |
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A Young Specimen of Gray Shark $24.99 Andrea Ferrari A Young Specimen of Gray Shark - Photographic Print |
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A Specimen of the Botany of New Holland $34.99 James Edward Smith A Specimen of the Botany of New Holland - Giclee Print |
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ALIVE AT THE BATCAVE BY SPECIMEN (CD) $19.38 Artist: SPECIMEN Genre: Popular Music Release Date: 7APR2009 |
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Medical Action Specimen Pan, 100/cs $28.25 Features of the Medical Action Specimen Pan: 800 cc |
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Italian Specimen Marble Table Top $39.99 Italian Specimen Marble Table Top - Giclee Print |
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Young Naturalists Examine a New Specimen $39.99 Young Naturalists Examine a New Specimen - Giclee Print |
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Specimen Days $7.99 In each section of Michael Cunningham's bold novel, we encounter the same group of characters: a young boy, a man, and a woman. "In the Machine" is a ghost story that takes place at the height of the industrial revolution, as human beings confront the alienating realities of the new machine age. "The Children's Crusade," set in the early twenty-first century, plays with the conventions of the noir thriller as it tracks the pursuit of a terrorist band that is detonating bombs around the city. The third part, "Like Beauty," evokes a New York 150 years into the future, when the city is all but overwhelmed by refugees from the first inhabited planet to be contacted by the people of Earth. Presiding over each episode of this inter-related whole is the prophetic figure of the poet Walt Whitman. Specimen Days is a genre-bending, haunting, and transformative ode to life in our greatest city, and a meditation on the direction and meaning of America's destiny. Abridged on 4 compact discs. Read by Alan Cumming. |
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Biohazard Specimen Bags $21.49 Biohazard specimen bags safely store infectious substances without the risk of spills. 10"h x 8"w and 9"h x 6"w biohazard specimen bags.Biohazard specimen bag states: "Specimen only ___ freeze ___ refrigerate ___ room temperature"100 bags per package.Clear, polyethylene biohazard specimen bag is ideal for transporting blood samples and contaminated waste.Specimen is placed in front zipper pocket and paperwork is placed in back pocket.When bag is received, it is safely and easily torn open at the top between the 2 solid lines - no need for blades or gloves. |
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Medline Specimen Bags - Bag, Specimen, Biohazard, Ziplok, 6X9, Pockt. Each $12.54 Manufacturer: Medline. Each. Specimen Bags: With a zip closure and additional document pouch. 6" x 9". Zip style closure Biohazard logo Customers also search for: Discount Specimen Bags - Bag, Specimen, Biohazard, Ziplok, 6X9, Pockt, Buy Specimen Bags |
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Mating of Two Specimen of Nembrotha Purpureolineolata $24.99 Andrea Ferrari Mating of Two Specimen of Nembrotha Purpureolineolata - Photographic Print |
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Male Specimen of an Ivory Billed Woodpecker $39.99 Joel Sartore Male Specimen of an Ivory Billed Woodpecker - Photographic Print |
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Specimen from the Collection in the Morgan Library $79.99 Specimen from the Collection in the Morgan Library - Premium Photographic Print |
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Radiohead Test Specimen Men's T-shirt $26.99 RADIOHEAD TEST SPECIMEN MEN'S T-SHIRT |
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Radiohead Test Specimen Big Men's T-shirt $29.99 RADIOHEAD TEST SPECIMEN BIG MEN'S T-SHIRT |
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Shopzeus USA zeusd1EPST1253493 Heavy Duty Specimen Container Large $42.49 Heavy duty specimen container large |
