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Latest Ichthyology Stories

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...

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...

2012-10-06 02:20:04

WASHINGTON, DC, October 6, 2012 /PRNewswire/ -- At least 37 countries, including the United States and Mexico, have proposed protections for ten shark and ray species under the Convention on International Trade in Endangered Species (CITES). The U.S. will join Colombia in leading an effort to secure trade measures for the oceanic whitetip shark. In cooperation with at least five other countries and the European Union, Mexico is pursuing protections for three species of...


Latest Ichthyology Reference Libraries

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...

Whitespotted Bamboo Shark, Chiloscyllium plagiosum
2013-01-12 08:06:13

This harmless shark is native to the Pacific Ocean off the coast of Indonesia, it is also found in coastal waters from Japan to India. It lives on the ocean floor in shallow areas around coral reefs, hiding during the day and feeding at night. In Taiwan and Madagascar the whitespotted bamboo shark is used for food. Occasionally this species is kept in home aquariums as pets. The young whitespotted bamboo shark will have a black body covered with white and light blue spots and dark vertical...

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