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Latest Ichthyology Stories

2009-03-19 15:43:22

Singaporean and British scientists say they used genome sequencing to discover the elephant shark can see colors much in the same way humans can. Byrappa Venkatesh of Singapore's Institute of Molecular and Cell Biology, and Professor David Hunt of the University College London's Institute of Ophthalmology said the finding might enhance scientists' understanding of how color vision evolved in early vertebrates during the past 450 million years. The elephant shark is a primitive deep-sea fish...

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2009-03-19 14:52:29

British scientists said Thursday, that a shoal of robotic fish that can detect pollution in the water are set to be released into the sea off Spain. The 1.5 meter long fish resemble carp and can be fitted with detectors that can identify the sources of pollution, such as ship fuel or chemicals in the water. Five of the robots are being released into the Bay of Biscay at Gijon in northern Spain as part of a three-year joint project between engineering consultancy BMT Group and researchers at...

2009-03-09 13:20:47

Fifteen-year-old boys who eat fish at least once a week achieve higher intelligence scores, Sweden researchers found. The study of nearly 4,000 teenagers, published in the March issue of Acta Paediatrica, found eating fish once a week was enough to increase combined, verbal and visuospatial intelligence scores by an average of 6 percent, while eating fish more than once a week increased them by just under 11 percent. Swedish researchers compared the responses of 3,972 males who took part in...

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2009-03-09 14:18:30

Fifteen-year-old males who ate fish at least once a week displayed higher cognitive skills at the age of 18 than those who it ate it less frequently, according to a study of nearly 4,000 teenagers published in the March issue of Acta Paediatrica. Eating fish once a week was enough to increase combined, verbal and visuospatial intelligence scores by an average of six per cent, while eating fish more than once a week increased them by just under 11 per cent. Swedish researchers compared the...

2009-02-28 18:16:23

European scientists say the decline in shark populations might be the result of gender segregation among the predatory fish. Printed in the Proceedings of the Royal Society B journal, researchers said there is a striking level of sexual segregation among the mako shark in the South Pacific Ocean. The Australian Broadcasting Corp. reported Wednesday that senior author David Sims of the School of Biological Sciences at the University of Plymouth and his team used data collected from a Spanish...

2009-02-19 10:22:55

A U.S. researcher has used historic photographs as evidence of fishing's impact on marine ecosystems and the decline of trophy fish. Graduate student researcher Loren McClenachan of the Scripps Institution of Oceanography at the University of California-San Diego accessed archival photographs spanning more than five decades to describe an 88 percent decline in the estimated weight of large predatory fish imaged in black-and-white 1950s sport fishing photos compared with the relatively...

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2009-01-30 07:10:00

According to a British study published on Thursday, stickleback fish are more willing to take risks when in pairs. Although the stickleback fish tends to find protection in numbers, researchers also discovered the leading fish would become proportionally bolder depending on the shyness of the following fish. "Our study shows that the process by which leaders and followers emerge is a dynamic one," said Andrea Manica of the University of Cambridge. "Individuals aren't simply born leaders or...

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2009-01-23 07:22:21

Scientists believe they have solved a conundrum involving what they thought were three different types of fish: one group of males, one group of females, and one group of juveniles.  The researchers discovered that they are all the same fish going through astonishing phases as they grow. "You can imagine it was a pretty exciting discovery," said G. David Johnson, of the Smithsonian's National Museum of Natural History. "The pieces kept falling into place." Previously the three fish had...

2009-01-15 15:41:46

Police in Nassau County, N.Y., said they have arrested a man who allegedly grabbed a shark out of a fish tank in a pet shop and hid it in his jacket. Investigators said Elbert Starks, 30, entered the Total Aquarium store in Lynbrook Dec. 12 and grabbed the $350 nurse shark out of its tank with his bare hands, Newsday reported Thursday. He left the store with the shark concealed in his jacket, police said. Starks is also alleged to have stolen a cashier's wallet Jan. 2 at Pet Barn in Franklin...

2009-01-07 22:56:35

Israeli scientists say the idea that a fish has a memory span of only 3 seconds is a myth. Researchers at Israeli Technion Institute of Technology in Haifa said fish trained to remember a certain sound at feeding time reacted to the same sound after five months in the wild, The Daily Telegraph reported Wednesday. The researchers said the findings could help promote more natural fish farming techniques, allowing fish farmers to release trained fish into the wild to mature and then bring them...


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
bellycheer
  • Good cheer; viands.
  • To revel; to feast.
The word 'bellycheer' may come from 'belle cheer', "good cheer".
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