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Latest Ichthyology Stories

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...

Bull Sharks Have Most Powerful Bite
2012-10-21 09:59:37

redOrbit Staff & Wire Reports — Your Universe Online The shark with the most powerful bite isn't the Great White or the Hammerhead, scientists have discovered -- rather, it is the Bull shark that bites with the most force relative to its size, according to a new study. Marine biologists, including Philip Motta and Maria Habegger of the University of South Florida (USF), measured the bite strength from 13 different shark species, according to Dan Vergano of USA Today. They...

Researchers Use Underwater Robot To Track Tagged Tiger Sharks
2012-10-18 10:18:37

Lawrence LeBlond for redOrbit.com - Your Universe Online Researchers from University of Delaware are in the midst of a multiyear study with Delaware State University researchers to better understand the behavior and migration patterns of sand tiger sharks. In the latest phase of the study, an underwater robot is being unleashed to hunt down and follow these seemingly placid predators. The Oceanographic Telemetry Identification Sensor (OTIS) is a remote-controlled underwater device that...

Ocean Warming Is Shrinking Fish Size
2012-10-01 09:33:57

Brett Smith for redOrbit.com - Your Universe Online New research by a team of North American scientists indicates that warmer water may cause shrinkage in average fish size and populations of fish stocks. "We were surprised to see such a large decrease in fish size," said William Cheung, a professor at the University of British Columbia and lead author of a report on the team´s research that was published in the journal Nature Climate Change. "Marine fish are generally known to...

White Shark Diet Varies By Individual
2012-09-30 08:52:34

April Flowers for redOrbit.com - Your Universe Online White sharks are the largest predatory sharks in the ocean. They are thought of as apex predators, animals who as adults have no natural predators of their own in their natural ecosystem. Marine scientists have long known that white sharks feed on seals and sea lions, but a new study from the University of California, Santa Cruz demonstrates that there is surprising variability in the diets of individual sharks. The research team...

Clues Captured For Sustainability Of Fish Populations
2012-09-28 10:33:22

Thanks to studies of a fish that gives birth to live young and is not fished commercially, scientists at UC Santa Barbara have discovered that food availability is a critical limiting factor in the health of fish populations. The scientists were able to attach numbers to this idea, based on 16 years of data. They discovered that the availability of enough food can drive up to a 10-fold increase in the per capita birthrate of fish. And, with adequate food, the young are up to 10 times more...


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
mallemaroking
  • Nautical, the visiting and carousing of sailors in the Greenland ships.
This word is apparently from a confusion of two similar Dutch words: 'mallemerok,' a foolish woman, and 'mallemok,' a name for some persons among the crew of a whaling vessel.