Quantcast
Last updated on April 21, 2014 at 1:20 EDT

Latest Ichthyology Stories

In Order For Fish And Rice To Thrive In Yolo Bypass, Just Add Water
2013-10-24 13:30:31

University of California - Davis From a fish-eye view, rice fields in California's Yolo Bypass provide an all-you-can-eat bug buffet for juvenile salmon seeking nourishment on their journey to the sea. That's according to a new report detailing the scientific findings of an experiment that planted fish in harvested rice fields earlier this year, resulting in the fattest, fastest-growing salmon on record in the state's rivers. The report, provided to the U.S. Bureau of Reclamation,...

New Air Breathing Amazonian Fish
2013-10-15 13:06:06

Lee Rannals for redOrbit.com - Your Universe Online A new, air-breathing Amazonian fish reported in the journal Copeia marks the first time a new species of arapaima has been identified since 1847. Dr. Donald Stewart of the SUNY College of Environmental Science and Forestry discovered the species dubbed Arapaima leptosoma while attempting to reclassify arapaimas, which is among the world's largest freshwater fish. Arapaimas can grow up to 10-feet in length and weigh 440 pounds. The...

Mosquitofish Mating Strategies Change In The Presence Of Predators
2013-10-11 12:44:08

North Carolina State University When predators lurk nearby, male Bahamas mosquitofish (Gambusia hubbsi) change mating strategies, rejecting elaborate courting rituals for more frequent and sometimes forceful encounters with females. But as a recent North Carolina State University study shows, mating strategies aren’t the only things changing for G. hubbsi when predators abound. The shape and size of the male fish’s genitalia are also linked to the presence or absence of predators....

New Electric Fish
2013-09-25 12:54:23

Lee Rannals for redOrbit.com - Your Universe Online A new species of electric fish has been discovered in the murky waters of the upper Mazaruni River in South America. Scientists reported in the journal Zoological Scripta that they discovered a species that they've dubbed Akawaio penak in the remote regions in northern Guyana during an expedition. The team analyzed tissue samples collected during the trip, and found that the fish represents not only a new species but also a new genus....

Researchers Identify Ray Species Used For Their Filters In Asian Medical Trade
2013-09-20 10:02:32

Brett Smith for redOrbit.com - Your Universe Online A newly published study led by researchers at the University of Washington has identified the anatomical differences between the different filters of various marine rays. Study researchers said their findings could be used to assess the species of ray filters being sold in Asian apothecary shops and to create new and improved manufacturing filters. The Washington researchers said they have found enough signature markers to be able to...

Genetic Basis For Behavior In Fish Found
2013-09-12 19:08:48

Brett Smith for redOrbit.com – Your Universe Online A new study on the schooling habits of fish could provide new insights into the social behaviors and natural variations of humans. Published on Thursday in the journal Current Biology, the new study was able to trace the tendency and the aptitude for schooling to different genomic regions in the threespine stickleback, a small fish that lives in the Northern Hemisphere. "The motivation to be social is common among fish and...

Tiger Shark Attacks In Hawaii More Prominent During Migration
2013-09-06 09:22:06

[ Watch the Video: Migrating Sharks May Be To Blame For Increased Attacks ] Brett Smith for redOrbit.com - Your Universe Online The recent rash of shark attacks in the Hawaiian Islands may be explained by the migratory patterns described in a report recently published by the journal Ecology. Based on a seven-year study of tiger shark movement, marine biologists from the University of Hawaii and University of Florida discovered that about 25 percent of the mature female tiger sharks...

New Shark Species Uses Fins To Walk On Ocean Floor
2013-09-02 10:34:52

[ Watch the Video: New Walking Shark Species Identified ] Michael Harper for redOrbit.com - Your Universe Online Scientists from Conservation International have discovered a new species of shark living in the waters of Indonesia. Unlike other sharks, however, this species has an unusual way of getting around; it walks. This ambulating aquatic creature uses its fins to gently glide across the sea floor on its belly as it searches for food and a place to rest. The newly discovered...

Fish Larvae Use Small Of Corals To Get Home
2013-08-29 11:24:50

[ Watch The Video: o-DISC Deployed Off One Reef Island ] Lee Rannals for redOrbit.com - Your Universe Online Scientists writing in the journal PLOS ONE say that if fish larvae were lost, they could just sniff their way back home. The study establishes that reef fish larvae can smell the presence of coral reefs from as far away as several miles offshore. The larvae are then able to use this scent to help guide themselves back home. The researchers were aiming to study the response of...

New Method Developed For Estimating Fish Movements Underwater
2013-08-23 11:24:41

University of Hawaiʻi at Mānoa How do you track a fish? There’s no “Google Maps” for finding fish. The radio signals that are the backbone of traditional GPS cannot pass through seawater. But sound travels remarkably well, so scientists often use acoustic telemetry to estimate an individual fish’s location. That means attaching an acoustic transmitter to a fish and then using a network of stationary underwater listening stations to monitor for the short clicking sounds that...


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...

More Articles (33 articles) »