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Latest Ichthyology Stories

2009-06-08 14:11:10

U.S. scientists looking at adaptation and survival in a wild population found guppies can adapt to new surroundings in just a few years. A research team led by Swanne Gordon from the University of California-Riverside found guppy populations introduced into new habitats developed new and advantageous traits in just a few years. Gordon and colleagues studied 200 guppies that had been taken from the Yarra River in Trinidad and introduced into two different environments in the nearby Damier...

2009-06-02 14:30:00

Study finds guppies adapt to new surroundings in just a few yearsWhat's the secret to surviving during times of environmental change? Evolve"¦quickly.A new article in The American Naturalist finds that guppy populations introduced into new habitats developed new and advantageous traits in just a few years. This is one of only a few studies to look at adaptation and survival in a wild population.A research team led by Swanne Pamela Gordon from the University of California, Riverside...

2009-05-23 18:30:33

With shark populations tumbling around the world, Chinese cooks are turning to manta and devil rays to fill their shark fin soup pots. Until recently, the rays were targeted only by subsistence fishermen, The Times of London reported Friday. Now, about 1,500 big manta rays are taken every year in the Indonesian fishing port of Lamakera. Tim Clark of the University of Hawaii said the rays could be overfished quickly. They have a long lifespan -- possibly more than 50 years -- and do not begin...

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2009-05-08 07:21:18

Researchers have discovered where basking sharks "“ the world's second largest fish "“ hide out for half of every year, according to a report published online on May 7th in Current Biology, a Cell Press publication. The discovery revises scientists' understanding of the iconic species and highlights just how little we still know about even the largest of marine animals, the researchers said. "While commonly sighted in surface waters during summer and autumn months, the...

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2009-05-06 08:15:00

Overfishing deemed most likely cause Sharks, barracuda and other large predatory fishes disappear on Caribbean coral reefs as human populations rise, endangering the region's marine food web and ultimately its reefs and fisheries, according to a sweeping study by researcher Chris Stallings of The Florida State University Coastal and Marine Laboratory. While other scientists working in the Caribbean have observed the declines of large predators for decades, the comprehensive work by Stallings...

2009-04-29 10:14:26

A U.S. researcher says he has developed a test that suggests fish can feel pain and they react to it much as do humans. Purdue University Assistant Professor Joseph Garner and Janicke Nordgreen, a doctoral student in the Norwegian School of Veterinary Science, attached small foil heaters to goldfish and slowly increased the temperature. Half of the fish were injected with morphine, and the others received saline. The researchers believed those with the morphine would be able to withstand...

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2009-04-14 08:23:14

Lateral line sensory system detects vibrations from unseen prey Most fish rely primarily on their vision to find prey to feed upon, but a University of Rhode Island biologist and her colleagues have demonstrated that a group of African cichlids feeds by using its lateral line sensory system to detect minute vibrations made by prey hidden in the sediments. The lateral line system is composed of a canal embedded in the scales along the side of the body of a fish, around its eyes and on its...

2009-04-09 08:00:30

U.S. biologists say DNA research shows giant whale sharks, a species threatened by over-fishing, don't always remain in protected waters. University of Illinois-Chicago geneticists led by Associate Professor Jennifer Schmidt studied the DNA of 68 whale sharks from 11 locations across the Indian and Pacific oceans and the Caribbean Sea. Our data show whale sharks found in different oceans are genetically quite similar, which means that animals move and interbreed between populations, said...

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2009-04-08 08:23:52

Whale sharks -- giants of the fish world that strike terror only among tiny creatures like the plankton and krill they eat -- are imperiled by over-fishing of the species in parts of its ocean range. That threat is underscored in a new study from geneticists led by Jennifer Schmidt, University of Illinois at Chicago associate professor of biological sciences, reported online April 7 in the journal PLoS One. Schmidt and her colleagues studied the DNA of 68 whale sharks from 11 locations across...

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2009-03-27 06:45:00

Conservationists are now able to watch the movement of large groups of fish as they gather into sandbanks. According to a report in Friday's edition of the journal Science, researchers were able to watch Atlantic herring gather off Georges Bank near Cape Cod, Mass., where they spawn during the night. At dawn, the mass of fish return to the deep and scatter. According to Nicholas C. Makris, professor of mechanical and ocean engineering at the Massachusetts Institute of Technology, the team...


Latest Ichthyology Reference Libraries

Prowfish
2014-05-30 12:05:29

The prowfish (Zaprora silenus) is a subtropical species of a perch-like fish found in the northern Pacific Ocean. The range of the prowfish is from the Aleutian Islands, Alaska to Kamchatka, Russia, from Navarin Canyon in the Bering Sea to Hokkaido, Japan and Monterey, California. The preferred habitat of the prowish is rocky bottom at a maximum of 2,200 feet in depth where they spend most of their adult life. Prowfish can grow to a length of 40 inches or more having an elongated body that...

Bluefish, Pomatomus saltatrix
2013-10-22 10:54:52

The Bluefish (Pomatomus saltatrix) is the only living species of the family Pomatomidae. It is a marine pelagic fish that can be found around the world in temperate and subtropical waters, except for the northern Pacific Ocean. Bluefish are known as tailor in Australia, shad on the east coast of South Africa, and elf on the west coast. Other common names regarding this fish are blue, chopper, and anchoa. It is a good eating and game fish. The bluefish is moderately proportioned with a...

Ichthyology
2013-10-02 13:31:45

Ichthyology is the study of fish that focuses on many types of fish including cartilaginous fish, jawless fish, and skeletal fish. This branch of zoology can be associated with marine biology and fisheries science, as well as other areas of study. Ichthyologists, those who practice ichthyology, have discovered more than 32,200 species of fish, and it is thought that they discover 250 new species each year. Humans first began to study fish during the Upper Paleolithic Revolution, when humans...

Little tunny, Euthynnus alletteratus
2013-03-28 14:07:39

The little tunny is found widespread in temperate and tropical waters of the Atlantic Ocean, Black Sea and Mediterranean Sea. It is the most common tuna and is highly migratory, with a range from Cape Cod, Massachusetts to Brazil in the Western Atlantic. In the Eastern Atlantic it is found from Skagerrak to South Africa. The little tunny will form schools close to the shoreline, around inlets, and sandbars that can cover up to two miles. This fish prefers warm water and will migrate south in...

African Sharptooth Catfish, Clarias gariepinus
2013-02-09 08:30:28

Image Credit: WA Djatmiko/Wikipedia (CC BY-SA 3.0, 2.5, 2.0 and 1.0) The African sharptooth catfish is native throughout Africa, and the Middle East, and in the 1980’s it was introduced all over the world. This catfish lives on muddy bottoms in freshwater lakes, rivers, swamps, man-made habitats, and occasionally found in urban sewage systems. This species is able to crawl across dry ground to another body of water when one pool dries up. It is also able to survive for long periods of...

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Word of the Day
barghest
  • A goblin in English folklore, often appearing in the shape of a large dog and believed to portend imminent death or misfortune.
  • A ghost, wraith, hobgoblin, elf, or spirit.
The origin of 'barghest' is not known, but it may be from perhaps burh-ghest, town-ghost, or German Berg-geist (mountain spirit) or Bär-geist (bear-spirit).
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