What killed tons of fish in European river? Mystery deepens

Laboratory tests following a mass die-off of fish in the Oder River detected high levels of salinity but no mercury poisoning its waters, Poland's environment minister said Saturday as the mystery continued as to what killed ...

Scientists navigate uncharted waters in fish immunology research

Upon infection or immunization, all jawed vertebrate species generate proteins called antibodies that bind and neutralize pathogens. Strong and long-lasting antibody responses in warm-blooded species such as mammals are produced ...

Whale shark observed bottom-feeding for first time

A shark specialist and a life scientist are reporting on video evidence of a whale shark observed bottom-feeding for the first time. Darren Whitehead, Investigación Tiburones México and Joel Gayford, a life scientist at ...

How fish evolved their bony, scaly armor

About 350 million years ago, your evolutionary ancestors—and the ancestors of all modern vertebrates—were merely soft-bodied animals living in the oceans. In order to survive and evolve to become what we are today, these ...

Environmental DNA reveals secret reef inhabitants

An international research team uses a global sampling of seawater to reveal which tropical reef fish occur where. To identify species and families, they successfully used the residual DNA shed by the animals present in the ...

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