Stephen Raverty of the Ministry of Agriculture in Canada and Joseph Gaydos of UC Davis speak with The Scientist about their recent study assessing the causes of orca deaths.

6PPD, a tire preservative, reacts with ozone to produce a compound that the researchers say may be responsible for large die-off events.

The fast-growing fish can now be raised and sold in the US, although it’s likely to be some time before the product hits the market.

The variation may help explain why stocked salmon don’t fare as well in the ocean.

Organophosphates jeopardize dozens of species, a federal review finds.

A fish farm blamed the “exceptionally high tides” resulting from yesterday’s solar eclipse for net failure. Authorities have authorized limitless takes of the invaders.

Intensive aquaculture favors increasingly virulent forms of certain fish-infecting parasites and pathogens, studies show.

Federal regulators OK the genetically modified fish for sale as food.