http://www.sciencedaily.com/news/plants_animals/fish/ All about fish. Current research in marine biology including fish habitats, aquaculture, speciation, deep sea fish and more. en-us Wed, 15 Feb 2012 18:05:02 EST Wed, 15 Feb 2012 18:05:02 EST 60 http://www.sciencedaily.com/images/logosmall.gif http://www.sciencedaily.com/news/plants_animals/fish/ For more science articles, visit ScienceDaily. http://www.sciencedaily.com/releases/2012/02/120213154053.htm A study of the evolutionary history of Antarctic fish and their "anti-freeze" proteins illustrates how tens of millions of years ago a lineage of fish adapted to newly formed polar conditions -- and how today they are endangered by a rapid rise in ocean temperatures. Mon, 13 Feb 2012 15:40:40 EST http://www.sciencedaily.com/releases/2012/02/120213154053.htm http://www.sciencedaily.com/releases/2012/02/120213134144.htm The choices big fish make on where to shelter could have a major influence on their ability to cope with climate change, say scientists. In research aimed at understanding the process of fish population decline when coral reefs sustain major damage, scientists have found that big fish show a marked preference for sheltering under large, flat table corals. Mon, 13 Feb 2012 13:41:41 EST http://www.sciencedaily.com/releases/2012/02/120213134144.htm http://www.sciencedaily.com/releases/2012/02/120211095049.htm Advances in studying genes mean that scientists in evolutionary developmental biology or “evo-devo” can now explain more clearly than ever before how bats got wings, the turtle got its shell and blind cave fish lost their eyes, says an evolutionary biologist. Sat, 11 Feb 2012 09:50:50 EST http://www.sciencedaily.com/releases/2012/02/120211095049.htm http://www.sciencedaily.com/releases/2012/02/120209172926.htm Those who have ventured to turn a vacant barn or garage into an aquaculture business have too often been defeated by high energy and feed costs, building-related woes and serious environmental problems. Now researchers are melding building design, fish ecology and aquaculture engineering techniques into a first-of-its-kind "building-integrated aquaculture" (BIAq) model to offer an affordable, more holistic and sustainable approach to indoor fish production located close to markets and able to succeed even in cold climates. Thu, 09 Feb 2012 17:29:29 EST http://www.sciencedaily.com/releases/2012/02/120209172926.htm http://www.sciencedaily.com/releases/2012/02/120209140200.htm Global warming is having an effect on the dive behavior and search for food of southern elephant seals. Researchers have discovered that the seals dive deeper for food when in warmer water. The scientists attribute this behavior to the migration of prey to greater depths and now wish to check this theory using a new sensor which registers the feeding of the animals below water. Thu, 09 Feb 2012 14:02:02 EST http://www.sciencedaily.com/releases/2012/02/120209140200.htm http://www.sciencedaily.com/releases/2012/02/120209101841.htm It's a matchup worthy of a late-night cable movie: put a school of starving piranha and a 300-pound fish together, and who comes out the winner? The surprising answer -- given the notorious guillotine-like bite of the piranha -- is Brazil's massive Arapaima fish. The secret to Arapaima's success lie in its intricately detailed scales, which could provide "bioinspiration" for engineers looking to develop flexible ceramics. Thu, 09 Feb 2012 10:18:18 EST http://www.sciencedaily.com/releases/2012/02/120209101841.htm http://www.sciencedaily.com/releases/2012/02/120209101728.htm Shark skin has long been known to improve the fish's swimming performance by reducing drag, but now a new study show that in addition, the skin generates thrust, giving the fish an extra boost. The duo also discovered that Speedo's shark skin-inspired Fastskin® FS II fabric surface does not improve swimming speed, although they point out that the figure hugging costumes probably enhance performance in other ways. Thu, 09 Feb 2012 10:17:17 EST http://www.sciencedaily.com/releases/2012/02/120209101728.htm http://www.sciencedaily.com/releases/2012/02/120208180253.htm Scientists have found that only about ten percent of the fall-run Chinook salmon spawning in California's Mokelumne River are naturally produced wild salmon. A massive influx of hatchery-raised fish that return to spawn in the wild is masking the fact that too few wild fish are returning to sustain a natural population in the river. Wed, 08 Feb 2012 18:02:02 EST http://www.sciencedaily.com/releases/2012/02/120208180253.htm http://www.sciencedaily.com/releases/2012/02/120208103226.htm A new study shows that the impact of fishing for tuna and similar species during the last 50 years has lessened the abundance of all these populations by an average of 60%. Experts add that the majority of tuna fish have been exploited to the limits of sustainability. Wed, 08 Feb 2012 10:32:32 EST http://www.sciencedaily.com/releases/2012/02/120208103226.htm http://www.sciencedaily.com/releases/2012/02/120207142144.htm Shark attacks in the US declined in 2011, but worldwide fatalities reached a two-decade high, according to the a new report. Tue, 07 Feb 2012 14:21:21 EST http://www.sciencedaily.com/releases/2012/02/120207142144.htm http://www.sciencedaily.com/releases/2012/02/120202150825.htm The Wildlife Conservation Society’s (WCS) Peru program recently announced the discovery of 365 species previously undocumented in Bahuaja Sonene National Park in southeastern Peru. Thu, 02 Feb 2012 15:08:08 EST http://www.sciencedaily.com/releases/2012/02/120202150825.htm http://www.sciencedaily.com/releases/2012/02/120201181220.htm Blooms, or proliferation, of jellyfish have shown a substantial, visible impact on coastal populations -- clogged nets for fishermen, stinging waters for tourists, even choked intake lines for power plants -- and recent media reports have created a perception that the world's oceans are experiencing increases in jellyfish due to human activities such as global warming and overharvesting of fish. Now, a new study questions claims that jellyfish are increasing worldwide and suggests claims are not supported with any hard evidence or scientific analyses to date. Wed, 01 Feb 2012 18:12:12 EST http://www.sciencedaily.com/releases/2012/02/120201181220.htm http://www.sciencedaily.com/releases/2012/02/120201173254.htm A global study has questioned claims that jellyfish are increasing worldwide. Blooms, or proliferation, of jellyfish have shown a substantial, visible impact on coastal populations -- clogged nets for fishermen, stinging waters for tourists, even choked intake lines for power plants -- and recent media reports have created a perception that the world's oceans are experiencing increases in jellyfish due to human activities such as global warming and overharvesting of fish. Now, a new global and collaborative study questions claims that jellyfish are increasing worldwide and suggests claims are not supported with any hard evidence or scientific analyses to date. Wed, 01 Feb 2012 17:32:32 EST http://www.sciencedaily.com/releases/2012/02/120201173254.htm http://www.sciencedaily.com/releases/2012/02/120201120732.htm Spotted salamanders exposed to contaminated roadside ponds are adapting to their toxic environments, according to new research. The study provides the first documented evidence that a vertebrate has adapted to the negative effects of roads apparently by evolving rapidly. Wed, 01 Feb 2012 12:07:07 EST http://www.sciencedaily.com/releases/2012/02/120201120732.htm http://www.sciencedaily.com/releases/2012/01/120131175625.htm A new species of prehistoric crocodile has been discovered. The extinct creature, nicknamed "Shieldcroc" due to a thick-skinned shield on its head, is an ancestor of today's crocodiles. Tue, 31 Jan 2012 17:56:56 EST http://www.sciencedaily.com/releases/2012/01/120131175625.htm http://www.sciencedaily.com/releases/2012/01/120129232818.htm Killer whales are the top marine predator. The increase in hunting territories available to killer whales in the Arctic due to climate change and melting sea ice could seriously affect the marine ecosystem balance. New research has combined scientific observations with Canadian Inuit traditional knowledge to determine killer whale behavior and diet in the Arctic. Sun, 29 Jan 2012 23:28:28 EST http://www.sciencedaily.com/releases/2012/01/120129232818.htm http://www.sciencedaily.com/releases/2012/01/120126142908.htm Fish biologists conducted one of the first studies of deep-sea fish sounds in more than 50 years, 2,237 feet under the Atlantic. With recording technology more affordable, fish sounds can be studied to test the idea that fish communicate with sound, especially those in the dark of the deep ocean. Thu, 26 Jan 2012 14:29:29 EST http://www.sciencedaily.com/releases/2012/01/120126142908.htm http://www.sciencedaily.com/releases/2012/01/120125091341.htm Archeologists have documented a series of more than 7,500-year-old fish seines (nets) and traps near Moscow. The equipment found, among the oldest in Europe, displays a great technical complexity. The survey will allow us to understand the role of fishing among the European settlements by early Holocene (10,000 years ago), especially in those areas where inhabitants did not practice agriculture until nearly the Iron Age. Wed, 25 Jan 2012 09:13:13 EST http://www.sciencedaily.com/releases/2012/01/120125091341.htm http://www.sciencedaily.com/releases/2012/01/120125091059.htm Each year around 20,000 people are infected by nematodes of the genus Anisakis and suffer from illnesses ranging from gastrointestinal diseases to serious allergic reactions as a result. For the first time, parasitologists have gathered data on the occurrence of the parasitic worm and have modeled the worldwide distribution of individual species in the ocean. The resulting maps not only enable statements to be made on the occurrence and migration behavior of certain hosts of the parasites, such as Baleen or toothed whales,  but also provide conclusions on the risk of human infection. Wed, 25 Jan 2012 09:10:10 EST http://www.sciencedaily.com/releases/2012/01/120125091059.htm http://www.sciencedaily.com/releases/2012/01/120124151945.htm The fate of the world's great whale species commands global attention as a result of heated debate between pro and anti-whaling advocates, but the fate of smaller marine mammals is less understood, specifically because the deliberate and accidental catching and killing of dolphins, porpoises, manatees, and other warm-blooded aquatic species are rarely studied or monitored. Tue, 24 Jan 2012 15:19:19 EST http://www.sciencedaily.com/releases/2012/01/120124151945.htm http://www.sciencedaily.com/releases/2012/01/120123094801.htm Lessons from tens of millions of years ago are pointing to new ways to save and protect today's coral reefs and their myriad of beautiful and many-hued fishes at a time of huge change in the Earth's systems. Today's complex relationship between fishes and corals developed relatively recently in geological terms -- and is a major factor in shielding reef species from extinction, say experts. Mon, 23 Jan 2012 09:48:48 EST http://www.sciencedaily.com/releases/2012/01/120123094801.htm http://www.sciencedaily.com/releases/2012/01/120122201209.htm Blind Mexican cavefish have not only lost their sight but have adapted to perpetual darkness by also losing their pigment (albinism) and having altered sleep patterns. New research shows that the cavefish are an example of convergent evolution, with several populations repeatedly, and independently, losing their sight and pigmentation. Sun, 22 Jan 2012 20:12:12 EST http://www.sciencedaily.com/releases/2012/01/120122201209.htm http://www.sciencedaily.com/releases/2012/01/120120184233.htm Rising human carbon dioxide emissions may be affecting the brains and central nervous system of sea fishes with serious consequences for their survival, an international scientific team has found. Carbon dioxide concentrations predicted to occur in the ocean by the end of this century will interfere with fishes' ability to hear, smell, turn and evade predators, says a professor. Fri, 20 Jan 2012 18:42:42 EST http://www.sciencedaily.com/releases/2012/01/120120184233.htm http://www.sciencedaily.com/releases/2012/01/120118173248.htm More than half of the 19,232 species newly known to science in 2009, the most recent calendar year of compilation, were insects -- 9,738 or 50.6 percent -- according to the 2011 State of Observed Species. Wed, 18 Jan 2012 17:32:32 EST http://www.sciencedaily.com/releases/2012/01/120118173248.htm http://www.sciencedaily.com/releases/2012/01/120112142303.htm A recent study found that the chlorophyll in green vegetables offers protection against cancer when tested against the modest carcinogen exposure levels most likely to be found in the environment. However, chlorophyll actually increases the number of tumors at very high carcinogen exposure levels. The research raises serious questions about whether traditional lab studies done with mice and high levels of toxic exposure are providing accurate answers to what is a real health risk, what isn't, and what dietary or pharmaceutical approaches are useful. Thu, 12 Jan 2012 14:23:23 EST http://www.sciencedaily.com/releases/2012/01/120112142303.htm http://www.sciencedaily.com/releases/2012/01/120112142241.htm Wandering albatrosses have altered their foraging due to changes in wind fields in the southern hemisphere during the last decades. Since winds have increased in intensity and moved to the south, the flight speed of albatrosses increased and they spend less time foraging. As a consequence, breeding success has improved and birds have gained 1 kilogram. Thu, 12 Jan 2012 14:22:22 EST http://www.sciencedaily.com/releases/2012/01/120112142241.htm http://www.sciencedaily.com/releases/2012/01/120112112641.htm Researchers have come up with a way of tagging gunpowder which allows its illegal use to be detected even after it has been detonated. Based on the addition of isotopes, the technique can also be used to track and differentiate between wild fish and those from a fish farm, such as trout and salmon. Thu, 12 Jan 2012 11:26:26 EST http://www.sciencedaily.com/releases/2012/01/120112112641.htm http://www.sciencedaily.com/releases/2012/01/120111223352.htm Biologists just discovered two new species of frogs in New Guinea, one of which is now the world's tiniest known vertebrate, averaging only 7.7 millimeters in size -- less than one-third of an inch. It ousts Paedocypris progenetica, an Indonesian fish averaging more than 8 millimeters, from the record. Wed, 11 Jan 2012 22:33:33 EST http://www.sciencedaily.com/releases/2012/01/120111223352.htm http://www.sciencedaily.com/releases/2012/01/120110192719.htm Fish parents can pre-condition their offspring to grow fastest at the temperature they experienced, according to new research. Tue, 10 Jan 2012 19:27:27 EST http://www.sciencedaily.com/releases/2012/01/120110192719.htm http://www.sciencedaily.com/releases/2012/01/120110114434.htm Scientists have revealed details of the world's most extreme deep-sea volcanic vents, five kilometers down in a rift in the Caribbean seafloor. The undersea hot springs, which lie 0.8 kilometers deeper than any seen before, may be hotter than 450 °C and are shooting a jet of mineral-laden water more than a kilometer into the ocean above. Tue, 10 Jan 2012 11:44:44 EST http://www.sciencedaily.com/releases/2012/01/120110114434.htm http://www.sciencedaily.com/releases/2012/01/120106164913.htm Scientists work to assist fishermen in ways to avoid accidentally hauling in butterfish, a species protected by fishing limits. The researchers develop models to predict where the fish will be. Fri, 06 Jan 2012 16:49:49 EST http://www.sciencedaily.com/releases/2012/01/120106164913.htm http://www.sciencedaily.com/releases/2012/01/120105145841.htm Neurons fire in a synchronized bursting pattern in response to robust signals indicating nearby food. Thu, 05 Jan 2012 14:58:58 EST http://www.sciencedaily.com/releases/2012/01/120105145841.htm http://www.sciencedaily.com/releases/2012/01/120104153747.htm Nature's game of intimidation and imitation comes full circle in the waters of Indonesia, where scientists have recorded for the first time an association between the black-marble jawfish and the mimic octopus. Wed, 04 Jan 2012 15:37:37 EST http://www.sciencedaily.com/releases/2012/01/120104153747.htm http://www.sciencedaily.com/releases/2012/01/120104115055.htm Researchers have made a new discovery into the complex world of spiders that reflects what some might perceive as similar behavior in human society. As male wolf spiders go searching for a mate, it appears they eavesdrop, match and even try to outdo the mating dances of their successful rivals, a behavior seen mainly in vertebrate animals. Wed, 04 Jan 2012 11:50:50 EST http://www.sciencedaily.com/releases/2012/01/120104115055.htm http://www.sciencedaily.com/releases/2011/12/111229203027.htm Researchers have found the epigenetic mechanism that links temperature and gonadal sex in fish. High temperature increases DNA methylation of the gonadal aromatase promoter in females. Thu, 29 Dec 2011 20:30:30 EST http://www.sciencedaily.com/releases/2011/12/111229203027.htm http://www.sciencedaily.com/releases/2011/12/111228134844.htm An increase in human activity is posing a threat to natural aquatic ecosystems in Tanzania and contributing to environmental damage and ecological changes. New research shows that agriculture and livestock farming leads to eutrophication in lakes and the proliferation of cyanobacteria which produce microcystins. New information about microcystins and other mycotoxins in Tanzanian lakes is useful for appraising the risk linked to drinking water and edible fish, which in turn affects the health of both humans and animals. Wed, 28 Dec 2011 13:48:48 EST http://www.sciencedaily.com/releases/2011/12/111228134844.htm http://www.sciencedaily.com/releases/2011/12/111227142628.htm A small fish crawling on stumpy limbs from a shrinking desert pond is an icon of can-do spirit, emblematic of a leading theory for the evolutionary transition between fish and amphibians. This theorized image of such a drastic adaptation to changing environmental conditions, however, may, itself, be evolving into a new picture. Tue, 27 Dec 2011 14:26:26 EST http://www.sciencedaily.com/releases/2011/12/111227142628.htm http://www.sciencedaily.com/releases/2011/12/111227093057.htm The 2007 Cosco Busan disaster, which spilled 54,000 gallons of oil into the San Francisco Bay, had an unexpectedly lethal impact on embryonic fish, devastating a commercially and ecologically important species for nearly two years, reports a new study. Tue, 27 Dec 2011 09:30:30 EST http://www.sciencedaily.com/releases/2011/12/111227093057.htm http://www.sciencedaily.com/releases/2011/12/111222152018.htm Coral reefs are extremely diverse ecosystems that support enormous biodiversity. But they are at risk. Carbon dioxide emissions are acidifying the ocean, threatening reefs and other marine organisms. New research analyzed the role of sea cucumbers in portions of the Great Barrier Reef and determined that their dietary process of dissolving calcium carbonate (CaCO3) from the surrounding reef accounts for about half of at the total nighttime dissolution for the reef. Thu, 22 Dec 2011 15:20:20 EST http://www.sciencedaily.com/releases/2011/12/111222152018.htm http://www.sciencedaily.com/releases/2011/12/111222103112.htm A compound produced from fish oil that appears to target leukemia stem cells could lead to a cure for the disease, according to researchers. Thu, 22 Dec 2011 10:31:31 EST http://www.sciencedaily.com/releases/2011/12/111222103112.htm http://www.sciencedaily.com/releases/2011/12/111221211229.htm A 14-year study in an atoll reef lagoon in Glover's Reef, Belize has found that fishing closures there produce encouraging increases in populations of predatory fish species. However, such closures have resulted in only minimal increases in herbivorous fish, which feed on the algae that smother corals and inhibit reef recovery. Wed, 21 Dec 2011 21:12:12 EST http://www.sciencedaily.com/releases/2011/12/111221211229.htm http://www.sciencedaily.com/releases/2011/12/111221140710.htm On the 15th anniversary of the return of wolves to Yellowstone National Park, a quiet but profound rebirth of life and ecosystem health is emerging, scientists conclude in a new report. Wed, 21 Dec 2011 14:07:07 EST http://www.sciencedaily.com/releases/2011/12/111221140710.htm http://www.sciencedaily.com/releases/2011/12/111221092001.htm A new analysis of two adaptive radiations in the fossil record found that these diversifications proceeded "head first." Head features diversified before body shapes and types. This suggests that feeding-related evolutionary pressures are the initial drivers of diversification. Wed, 21 Dec 2011 09:20:20 EST http://www.sciencedaily.com/releases/2011/12/111221092001.htm http://www.sciencedaily.com/releases/2011/12/111220154122.htm A Mediterranean diet with large amounts of vegetables and fish gives a longer life, according to Swedish research. A number of studies since the 1950s have shown that a Mediterranean diet, based on a high consumption of fish and vegetables and a low consumption of animal-based products such as meat and milk, leads to better health. Tue, 20 Dec 2011 15:41:41 EST http://www.sciencedaily.com/releases/2011/12/111220154122.htm http://www.sciencedaily.com/releases/2011/12/111219203947.htm A new study on the endangered Ozark Hellbender giant salamander is the first to detail its skin microbes, the bacteria and fungi that defend against pathogens. Mon, 19 Dec 2011 20:39:39 EST http://www.sciencedaily.com/releases/2011/12/111219203947.htm http://www.sciencedaily.com/releases/2011/12/111219152508.htm The impact of hatcheries on salmon is so profound that in just one generation traits are selected that allow fish to survive and prosper in the hatchery environment, at the cost of their ability to thrive and reproduce in a wild environment. Researchers were surprised by the speed of evolution and natural selection. Mon, 19 Dec 2011 15:25:25 EST http://www.sciencedaily.com/releases/2011/12/111219152508.htm http://www.sciencedaily.com/releases/2011/12/111216112903.htm Marine biologists shed light on the larval stage of the barracuda, as well as several other closely related species. Fri, 16 Dec 2011 11:29:29 EST http://www.sciencedaily.com/releases/2011/12/111216112903.htm http://www.sciencedaily.com/releases/2011/12/111215141607.htm Nitrogen derived from human activities has polluted lakes throughout the Northern Hemisphere for more than a century and the fingerprint of these changes is evident even in remote lakes located thousands of miles from the nearest city, industrial area or farm. The findings are based on historical changes in the chemical composition of bottom deposits in lakes using an approach similar to aquatic archeology. Thu, 15 Dec 2011 14:16:16 EST http://www.sciencedaily.com/releases/2011/12/111215141607.htm http://www.sciencedaily.com/releases/2011/12/111215135800.htm Researchers studying sound production in perch-like fishes have discovered a link between two unrelated lineages of fishes, taking researchers a step closer to understanding the evolution of one of the fastest muscles in vertebrates. Thu, 15 Dec 2011 13:58:58 EST http://www.sciencedaily.com/releases/2011/12/111215135800.htm http://www.sciencedaily.com/releases/2011/12/111215095613.htm In 2011, researchers at the California Academy of Sciences added 140 new relatives to our family tree. The new species include 72 arthropods, 31 sea slugs, 13 fishes, 11 plants, nine sponges, three corals, and one reptile. They were described by more than a dozen Academy scientists along with several dozen international collaborators. Thu, 15 Dec 2011 09:56:56 EST http://www.sciencedaily.com/releases/2011/12/111215095613.htm http://www.sciencedaily.com/releases/2011/12/111213110527.htm Scientists tracked a southern elephant seal for an astonishing 18,000 miles -- the equivalent of New York to Sydney and back again. Tue, 13 Dec 2011 11:05:05 EST http://www.sciencedaily.com/releases/2011/12/111213110527.htm http://www.sciencedaily.com/releases/2011/12/111212153117.htm The eel-like body and scrawny "limbs" of the African lungfish would appear to make it an unlikely innovator for locomotion. But its improbable walking behavior, newly described, redraws the evolutionary route of life on Earth from water to land. Mon, 12 Dec 2011 15:31:31 EST http://www.sciencedaily.com/releases/2011/12/111212153117.htm http://www.sciencedaily.com/releases/2011/12/111212123943.htm Field research has uncovered the world's smallest frogs in southeastern New Guinea. The discovery also makes them the world's smallest tetrapods (non-fish vertebrates). The frogs belong to the genus Paedophryne, all of whose species are extremely small, with adults of the two new species -- named Paedophryne dekot and Paedophryne verrucosa -- only 8 to 9 millimeters in length. Mon, 12 Dec 2011 12:39:39 EST http://www.sciencedaily.com/releases/2011/12/111212123943.htm http://www.sciencedaily.com/releases/2011/12/111211134006.htm Danish researchers are leading the way for future biodiversity monitoring using DNA traces in the environment to keep track of threatened wildlife: a lake water sample the size of a shot glass can contain evidence of an entire lake fauna. Sun, 11 Dec 2011 13:40:40 EST http://www.sciencedaily.com/releases/2011/12/111211134006.htm http://www.sciencedaily.com/releases/2011/12/111209171946.htm Bluefin populations on both sides of the Atlantic Ocean have declined precipitously since 1950, according to a new study. The model estimates the number of Atlantic bluefin tuna remaining in the ocean and projects future population sizes based on alternative management scenarios. The new model is revolutionary in its ability to account for population overlap (mixing) of this highly migratory animal on the North Atlantic foraging grounds. Fri, 09 Dec 2011 17:19:19 EST http://www.sciencedaily.com/releases/2011/12/111209171946.htm http://www.sciencedaily.com/releases/2011/12/111209150200.htm Scientists sound an alarm that expanding ocean dead zones are shrinking the habitat for high value fish such as marlins, other billfish and tunas in the tropical northeast Atlantic Ocean. Without taking this phenomena into account, scientific fish stock assessments could provide false signals that stocks are healthy, when in fact they are not, thus allowing overfishing that further depletes these fish stocks. Fri, 09 Dec 2011 15:02:02 EST http://www.sciencedaily.com/releases/2011/12/111209150200.htm http://www.sciencedaily.com/releases/2011/12/111209105326.htm A new study examines the complex and dynamic interactions between white sharks and Cape fur seals in False Bay, South Africa; Offers new insights on physical and biological factors underlying predator-prey interactions in marine environment. Fri, 09 Dec 2011 10:53:53 EST http://www.sciencedaily.com/releases/2011/12/111209105326.htm http://www.sciencedaily.com/releases/2011/12/111207000757.htm Scientists have observed a strategy for females to avoid unwanted male attention: Choosing more attractive friends. The study is the first to show females spending time with those more sexually attractive than themselves to reduce harassment from males. The study focuses on the Trinidadian guppy, a species of small freshwater fish. The research shows that the tactic is successful and by ensuring they are less attractive than other group members, the fish experience less harassment and fewer mating attempts from males. Wed, 07 Dec 2011 00:07:07 EST http://www.sciencedaily.com/releases/2011/12/111207000757.htm http://www.sciencedaily.com/releases/2011/12/111206115252.htm New discoveries in "marine forensics" will allow federal seafood agents to genetically test blue marlin to quickly and accurately determine their ocean of origin. The test is needed to ensure that the blue marlin sold in US seafood markets were not taken from the Atlantic Ocean. Regulation of Atlantic blues reflects overfishing and a troubling drop in population. Tue, 06 Dec 2011 11:52:52 EST http://www.sciencedaily.com/releases/2011/12/111206115252.htm http://www.sciencedaily.com/releases/2011/12/111206114219.htm Researchers have shed light on the peculiar behavior of the commercially and ecologically valuable sandeel. Tue, 06 Dec 2011 11:42:42 EST http://www.sciencedaily.com/releases/2011/12/111206114219.htm