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Latest Ichthyology Stories

Coral Reef Fish Connections Are Much More Complex
2012-09-04 04:00:27

April Flowers for redOrbit.com - Your Universe Online Ocean scientists have known for a long time that juvenile coral reef fishes use coastal seagrass and mangrove habitats as nurseries, before they move into the coral reefs as adults. According to a study published in Proceedings of the National Academy of Sciences, the fishes' movements, and the connections between different tropical habitats, are much more complex than previously realized. Despite several studies that have...

shutterstock_78260350
2012-08-24 19:32:28

Lee Rannals for redOrbit.com — Your Universe Online [ Watch the Video ] Simulations have helped scientists answer some lingering questions regarding the evolution of fish group formation. Researchers reported in the journal Science that they have found evidence that collective motion in animal groups like schools of fish can evolve as a finely tuned defense against attack from predators. Iain Couzin, an assistant professor of ecology and evolutionary biology at Princeton who...

2012-08-17 23:02:03

Tracking Jaws - non-profit Ocearch brings Global Shark Tracking to US San Francisco, California (PRWEB) August 17, 2012 With the nation captivated by sharks this week, OCEARCH is preparing to deploy its technology in U.S. waters to solve a 400 million year old mystery of the Great White Sharks in Cape Cod this September. OCEARCH, a 501(c)(3) non-profit, supports leading researchers and institutions obtaining ground breaking data on the health and biology of sharks. They deliver unparalleled...

Conservation Groups Want Protection For California Sharks
2012-08-14 14:24:13

Brett Smith for redOrbit.com - Your Universe Online As the Discovery Channel kicks off its annual Shark Week, conservation groups are petitioning the government to protect the ferocious ocean predators living off the coast of California. Citing a declining population, Oceana, The Center for Biological Diversity, and SharkStewards filed a scientific petition with the National Marine Fisheries Service seeking to protect great white sharks living off the West Coast under the Endangered...

Shark Fin Soup In US Restaurants Contain Threatened Species
2012-08-09 12:42:46

Lawrence LeBlond for redOrbit.com - Your Universe Online The plight of the shark has been a hot topic for conservationists as of late, most appalled by the continuing presence of shark hunting that ends up with many threatened species being mutilated only for their precious fins for use in the popular Chinese delicacy shark fin soup. Shark fin soup has been a popular Chinese dish for decades, but new evidence is surfacing that threatened sharks are turning up in shark fin soup in many...

How Does The Swim Bladder Affect Hearing In Cichlid Fish?
2012-08-08 11:35:57

"Sound vibrations are transmitted to the inner ear via anterior extensions of the swim bladder or via bony ossicles", the biologist Tanja Schulz-Mirbach explains how swim bladders may serve for hearing. The hearing sensitivity improves considerably in this way. The anterior part of the swim bladder functions in specialized fish species similar to an ear drum. Up to now the effects of the different swim bladder morphologies have not been investigated in detail in cichlid fishes. The...

2012-06-21 12:03:05

Fish-saving sound threshold recommended for pile driving projects The rise of ocean infrastructure development to tap energy sources such as tides, offshore wind and natural gas will require more pile driving, the practice of pounding long, hollow steel pipes called piles into the ocean floor to support energy turbines and other structures. But pile driving creates loud, underwater booms that can harm fish and other marine animals. Many scientists and regulators have assumed that...

2012-06-19 23:12:26

Individuals in some species learn information about food, predators, and potential mates indirectly from conspecifics, without taking unnecessary risks by learning directly for themselves (℠social learning´).  Sarah Zala and Dustin Penn from the Konrad Lorenz Institute of Ethology of the University of Veterinary Medicine, Vienna investigated whether zebrafish use social learning to assess risk (℠boldness/shyness´ behavior). They found that wild zebrafish, which are...

2012-06-08 10:18:59

A bioinspired robot has provided the first experimental evidence that live zebrafish can be influenced by engineered robots. Results published today, 8 June, in IOP Publishing's journal Bioinspiration and Biomimetics, provide a stepping stone on the path to using autonomous robots in an open environment to monitor and control fish behavior. In the future, water-based robots could potentially contribute to the protection of endangered animals and the control of pest species. The...


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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drawcansir
  • A blustering, bullying fellow; a pot-valiant braggart; a bully.
This word is named for Draw-Can-Sir, a character in George Villiers' 17th century play The Rehearsal.
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