Feminine looking “sneaker” goby male fish end up getting the most sex

September 28th, 2009 LONDON - Experiments in stickleback fish have shown for the first time that the evolution of new sex chromosomes is the driving force behind the formation of a new vertebrate species. Up until now, most evidence has shown that new species arise because they have adapted to new environments.

September 23rd, 2009 WASHINGTON - Scientists have identified a bizarre new ghostshark, the male species of which has a club-like sex organ on its forehead. According to a report in National Geographic News, named the Eastern Pacific black ghostshark, the news species uses winglike fins to "fly" through its dark habitat, thousands of feet deep off the coasts of California and Mexico's Baja California peninsula.

September 14th, 2009 Male bass in many US rivers feminized, study findsWASHINGTON — Government scientists figure that one out of five male black bass in American river basins have egg cells growing inside their sexual organs, a sign of how widespread fish feminizing has become. The findings come from the U.S.

August 14th, 2009 MELBOURNE - A new research conducted by Australian scientists has shown that some female fish find different male traits attractive from year to year. According to the researchers, the changing preferences of female fish may play an important role in evolution.

August 12th, 2009 WASHINGTON - A team of scientists from Canada has uncovered alarming invasion of the round goby fish into Great Lakes tributaries, which is likely to make an adverse impact on endangered fishes in the region. The team, from the University of Toronto (U of T), the Ontario Ministry of Natural Resources and the University of Guelph has identified a drastic invasion of round goby into many Great Lakes tributaries, including several areas of the Thames, Sydenham, Ausable and Grand Rivers.

July 21st, 2009 WASHINGTON - A new research by scientists from the University of Victoria has shown that fish avoid the divers and snorkelers who try to count them, and that is why using snorkelers and SCUBA divers may misrepresent the number of fish. Not all types of fish are equally frightened by the divers, and Faculty of 1000 member Helen Yap, who recommended the study, explains that therefore "such methods may not provide an accurate picture of the actual diversity and abundance of fish communities." Counting coral reef fish informs researchers about local ecological changes.

July 16th, 2009 SYDNEY - The male members of an ancient fish species known as sea dinosaurs impregnated females with penis like organs 380 million years ago, just like modern day sharks. Some fish species engaged in penetrative sex and gave birth to young ones, according to a study conducted by Curtin University of Technology (CUT).

July 7th, 2009 WASHINGTON - A new study by an international team of researchers has suggested that fish may have become an important part of the year-round diet for early humans in China as far back as 40,000 years ago. Freshwater fish are an important part of the diet of many peoples around the world, but it has been unclear when fish became an important part of the year-round diet for early humans.

June 30th, 2009 WASHINGTON - A new research has determined that fish are more likely to exhibit natural behavior in a home aquarium in large groups, rather than when kept alone or in pairs. Scientists at the Universities of Plymouth and Exeter in the UK conducted the research.

June 29th, 2009 SYDNEY - Among animals, many species seem to slip naturally into their dominant role while others resign themselves to play the part of lowly subordinates. But why do the latter embrace this fate so readily instead of putting up a fight? A University of Sydney (U-S) team is trying to answer this question by studying the interactions between male mosquito fish to see if their behavioural strategy can be traced to their physical skills.

June 29th, 2009 WASHINGTON - Delving deep into the social hierarchy among male mosquitofish, researchers at the University of Sydney are trying to find out why some fishes seem to slip naturally into their dominant role but others resign themselves to play the part of lowly subordinates. The researchers studied the interactions between male mosquitofish to see if their behavioural strategy can be traced down to their physical skills.

June 26th, 2009 WASHINGTON - Rising carbon dioxide (CO2) levels in the ocean can cause abnormally large growth in the otoliths, or ear bones, of fish, say researchers at Scripps Institution of Oceanography at UC San Diego. Considered a fundamental bodily structure in fish, otoliths serve a vital function in fish by helping them sense orientation and acceleration.

June 17th, 2009 WASHINGTON - Farmed fish, if fed by-products rendered from cows, could transmit Creutzfeldt Jakob disease-commonly known as mad cow disease. Questioning the safety of eating farmed fish, Dr.

June 13th, 2009 Fish toss a go for veterinarians visiting SeattleSEATTLE — Despite complaints from an animal-rights group, a national veterinary association says Seattle's famed fishmongers will be tossing dead fish at its Seattle convention next month. American Veterinary Medical Association CEO Ron DeHaven says his organization will proceed with a plan to host a team-building program offered by the famous fish-throwers of Seattle's Pike Place Fish Market.

June 10th, 2009 Veterinary group rethinks fish toss in SeattleSEATTLE — Seattle's famed fishmongers may be tossing rubber fish instead of real ones at a national veterinary association's convention next month following complaints from an animal-rights group. American Veterinary Medical Association chief executive Ron DeHaven said the Schaumburg, Ill.-based organization had thought inviting one of Seattle's top tourist attractions — the fish-throwers at the Pike Place Fish Market — to the event would be a great "team-building experience." But after People for the Ethical Treatment of Animals raised concerns about the ethics of using dead fish as props at a veterinary event, DeHaven said the AVMA would explore other options, including an alternative PETA suggested: using rubber fish.