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A transparent zebrafish has been engineered to allow scientists to watch how cancers develop and behave
inside the body in real time. Each internal organ of the fish and its bones can be seen clearly throughout its life.
Observations have shown already that the spread of cancer cells is not random – they home in on a particular area. Click
Special thanks to Priscilla in Hollywood, California, and to Gabe from Brooklyn for sending us the link to this story.
Residents of Kandanassery village near here were quite surprised when small fish started raining down
towards the end of a sudden downpour on Monday night. The phenomenon was first noticed by two persons when the little
slimy things started pattering on their body while they were returning home late in the night. As they thought that
people would reject this as a mere fantasy or concocted tale unless there was a tangible proof, they picked up some of
the bubbling fish and kept them in a water-filled bucket near the village library. Click
Scientists plan to launch 60 tiny fish on a zero gravity rocket ride from above the Arctic Circle on
Monday to try to plumb the secrets of motion sickness. Tomas Hedqvist, project manager for Sweden's Esrange Space
Centre, said the baby cichlid fish will head 260 km (160 miles) into the air on an 11-metre (36-foot) two-stage rocket,
where they will experience six minutes of weightlessness. Experimenters Reinhard Hilbig and Ralf Anken of the University
of Stuttgart-Hohenheim in Germany will train six video cameras on the fish, each of which will be housed in its own
aquarium, to see how they react. Click
Special thanks to Serge from Quebec, Canada, and to Jeff of Northern Lights Aquatics for sending us this link.
Globally, invasive species represent a major threat to native species. A new paper* shows that, for
rivers and lakes, where these invasions occur is predicted by human activity; find an area where economic activity is
high and, in nearby lakes and rivers, up to a quarter of species will be migrants to the region. In the first global
analysis of invasions in aquatic habitats, Fabien Leprieur, Olivier Beauchard, and colleagues investigate what factors
can predict invasion events and find that human activity is to blame. Click
The mid-20th century crash of the sardine fishery off California for decades has vexed marine ecologists
searching for the root causes of large fluctuations in the sardine population. Before its collapse, the fishery was one
of the world's most productive and formed the setting of John Steinbeck's "Cannery Row" in Monterey, Calif.
Scientists at Scripps
Institution of Oceanography at UC San Diego have now shed light on the puzzle by proposing a plausible mechanism behind
the mystery: wind. Click
Crayfish body fossils and burrows discovered in Victoria, Australia, have provided the first physical
evidence that crayfish existed on the continent as far back as the Mesozoic Era, says Emory University paleontologist
Anthony Martin, who headed up a study on the finds. "Studying the fossil burrows gives us a glimpse into the ecology of
southern Australia about 115 million years ago, when the continent was still attached to Antarctica," says Martin, a
senior lecturer in environmental studies at Emory and an honorary research associate at Monash University in Melbourne. Click
A large goliath grouper lives in a stormwater retention pond in mid Pinellas County. It probably came
from the bay through an outlet pipe when it was young - perhaps more than a decade ago. A fisherman who recently hooked
it thinks it approaches 180 pounds, still modest for a species that can top 800. Now it may be landlocked - too fat to
squeeze back through the pipe to a more natural setting. "That's the first time I ever heard about" a goliath living in
a retention pond, says Jim Colvocoresses, biologist for Florida's Fish and Wildlife Research Institute. "But I could see
how it could happen. For the first six years of their lives, they are pretty much an inshore, shallow-water animal." Click
They only grow up to 6cm, yet are perhaps the most abundant creatures on the planet in terms of weight.
Krill - small shrimp-like crustaceans which with modern technology can be used in fish feed, human dietary supplements,
soya sauce flavouring, pharmaceuticals, or even to clean the paintings of Old Masters - are in increasing demand. A
"pink gold", which if fed to farmed salmon cut out the need for colourants to make the flesh pink, krill are extremely
rich in Omega-3 fatty acids, linked to health benefits for people. Occurring in all oceans but most abundant in the
Southern Ocean, they are also the staple diet for seals, penguins and whales and snow petrels. Click
From Joshua from Okemos, Michigan,
Bonnie from Iowa
calls and talks about adding a solar panel to her pond this
Jourdan from Connecticut
calls and talks about Splash Tetras and his page in
Evan from Colorado talks about the
overflow in his 72-gallon aquarium, about uv-sterilization,
and abut ozone for aquariums.
The Bailey Brothers
encourage YOU to call Pet Fish Talk
during the show and talk about your pet fish.
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