"It's a whole new way of looking at what's in the ocean." In this undated file photo, a large group of yellowfin tuna is shown in the waters off Vibo Valentia, Calabria, Italy. Giordano Cipriani/Getty ...

image: Bits of DNA floating in 1 liter (~1 quart) of water matched 12 different fish species. The bar graph depicts the number of 'reads' for each DNA sequence. Menhaden gave the most, about 20,000 ...

Researchers have developed a new non-invasive method to count individual fish by measuring the concentration of environmental DNA in the water, which could be applied for quantitative monitoring of ...

In 1975, scientists tried spaying a few hundred female betta fish. We all know what happens to spayed cats and dogs: They become sterile. Betta fish are different. A third of the surviving bettas ...

Despite protective measures being in place, endangered fish species are regularly caught then sold in open markets. And while visually searching them out can be difficult, a new technology could more ...

Researchers have outlined a powerful new tool for monitoring trade of rare and endangered fish species in Hong Kong wet markets. Using environmental DNA (eDNA) present in the drain runoff water of ...

The completion of a South American lung fish genome sequencing represents one of the most remarkable moments within current genetic research. Because .

SEATTLE — A new study by researchers at the University of Washington used "environmental DNA" to assess where culvert replacements helped increase fish passage. Researchers utilized a technique they ...

River water, lake water, and seawater contain DNA belonging to organisms such as animals and plants. Ecologists have begun to actively analyze such DNA molecules, called environmental DNA, to assess ...