Antarctic Fish Have Ice In Their Veins

Scientists have revealed that some fish that thrive in the freezing cold waters of the Antarctic actually have ice in their veins. A protein in their system called notothenioids not only keep the fish from freezing to death, but also keeps ice crystals in their veins. Although the ice crystals would melt at temperatures just slightly above freezing, the fish […]

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Deepwater spill still killing fish

The oil released during the BP Deepwater Horizon disaster may damage fish populations in the Gulf of Mexico for years to come. New research from the National Oceanic and Atmospheric Administration found that exposure to crude oil can cause heart defects in fish embryos—abnormalities that will likely kill many developing fish and shorten the lives of others. The study looked […]

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Fish on drugs

Psychiatric medications passing through sewage treatment plants could be dramatically changing the behavior of fish. After researchers discovered low levels of common anti-anxiety drugs called benzodiazepines in perch living downstream from a treatment plant in southern Sweden, they tested the same concentrations of the drug on fish in the lab. They found that the medicine made the fish lose their […]

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