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Latest Ichthyology Stories

2013-02-06 16:02:40

Perceived risk of predation increased acceptance of immigrants into group Cichlid fish are more likely to accept immigrants into their group when they are under threat from predators and need reinforcements, new research shows. The researcher suggests that there are parallels between cooperatively breeding fish's and humans' regulation of immigrants. The research was published today, 6 February 2013, in the journal Proceedings of the Royal Society B. The Princess of Lake Tanganyika...

High-Tech Robotic Fish Glides Through Water With Great Ease
2013-01-17 12:54:52

Lee Rannals for redOrbit.com — Your Universe Online Scientists from the Michigan State University made a number of improvements on a high-tech robotic fish. The new fish, called Grace, was designed and built by Xiaobo Tan, an MSU associate professor of electrical and computer engineering, and his team. They equipped the new fish with an array of sensors, allowing it to travel autonomously through the water, as well as measure water temperature, quality and other pacts. These...

2013-01-14 10:30:20

Tiny coral reef wrasses can swim as fast as some of the swiftest fish in the ocean — but using only half as much energy to do so, Australian scientists working on the Great Barrier Reef have found. By flapping their fins in a figure-eight pattern, bluelined wrasses can travel at high speeds while using 40 per cent less energy than tunas of the same size. “For a long time, people thought the best high-speed swimmers were the fishes cruising in open waters, like mackerel and...

Snapshot Of Pupfish Evolution In Action
2013-01-10 15:28:17

University of California - Davis Chris Martin has bred more than 3,000 hybrid fish in his time as a graduate student in evolution and ecology at UC Davis, a pursuit that has helped him create one of the most comprehensive snapshots of natural selection in the wild and demonstrated a key prediction in evolutionary biology. "We can see a surprisingly complex snapshot of natural selection driving the evolution of new specialized species," said Martin, who with Professor Peter Wainwright...

Shark Embryos Use Natural Repellant To Avoid Predators
2013-01-10 12:04:28

[Watch Video: Embryonic Bamboo Sharks Respond To Predators] Brett Smith for redOrbit.com - Your Universe Online In search of a better shark repellent, Australian marine biologist Ryan Kempster stumbled upon a behavior by embryonic sharks designed to evade predators sniffing around for lunch. Drawing on the same electroreceptors that adult sharks use to find prey, tiny embryonic bamboo sharks can sense predators and completely stop any movement, essentially ℠playing...

2013-01-07 10:12:22

Hawaiian waterfall-climbing fish use same muscles to climb and feed Going against the flow is always a challenge, but some waterfall-climbing fish have adapted to their extreme lifestyle by using the same set of muscles for both climbing and eating, according to research published January 4 in the open access journal PLOS ONE by Richard Blob and colleagues from Clemson University. The Nopili rock-climbing goby is known to inch its way up waterfalls as tall as 100 meters by using a...

Prey Density Is More Important Than Total For Sea Predators
2013-01-04 13:02:20

Brett Smith for redOrbit.com - Your Universe Online As ocean predators comb the waters in search of a food source, they often seek out dense groups of prey to maximize their hunting efforts, according to a new study in the open access journal PLOS ONE. A team of American and Canadian biologists began their study by trying to find out where three different Bering Sea predators — northern fur seals and two different sea birds, black-legged kittiwakes and thick-billed murres —...

Interaction Of Robots And Animals Studied Through Ethorobotics
2012-11-21 05:20:58

redOrbit Staff & Wire Reports - Your Universe Online New research sheds light on the nascent field of ethorobotics, the study of bioinspired robots that interact with animal counterparts. Scientists from Polytechnic Institute of New York University (NYU-Poly) studied the role of real-time feedback in attracting or repelling live zebrafish in the presence of a robotic fish. The findings revealed that zebrafish show increased attraction to robots that are able to modulate their...

Whale Sharks Studied Using Metabolomics
2012-11-17 05:56:18

redOrbit Staff & Wire Reports - Your Universe Online The metabolite homarine is a useful indicator of the health status of whale sharks, according to new research from experts at the Georgia Aquarium and the Georgia Institute of Technology (Georgia Tech). Dr. Alistair Dove, the Director of Research & Conservation at Georgia Aquarium and an adjunct professor at Georgia Tech, and colleagues, discovered that the concentration of homarine in the serum was a major difference between...

Shark Brains Are Similar To Our Own
2012-10-31 12:58:10

Lee Rannals for redOrbit.com - Your Universe Online New research published in the journal Brain, Behavior and Evolution indicates that the infamous shark from the movie Jaws may have more in common with police chief Martin Brody than previously thought. The Australian government announced a new catch-and-kill policy for sharks last month after great white sharks killed five surfers and swimmers this past year. The government also said it would be funding research into other measures to...


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
malpais
  • The ragged surface of a lava-flow.
'Malpais' translates from Spanish as 'bad land.'