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Fish health

How environmental and dietary changes affect farmed fish

Aquaculture diet has become increasingly plant based. In addition, the industry faces environmental changes. Recent findings in salmonids when the two challenges are combined, give cause for concern.

Ultrasound detects high cranial pressure

An anatomical discovery, combined with Norwegian ultrasound technology, is about to save lives and prevent brain damage.

The mackerel is out of shape

In recent years, mackerel stocks have been thriving, both in terms of their numbers and distribution. But the individual mackerel are not doing so well. They are growing more slowly and have become thinner, probably due to tough competition for food within the population.

Super salmon training starts early

Healthier, stronger, bigger: this is a goal for Norwegian farm-raised salmon—and Harald Takle is their personal trainer.

Atlantic cod recovers quickly after catch-and-release

Atlantic cod recover quickly if they get fished in shallow water, are handled properly and released immediately after capture.

Fish in drug-tainted water see some benefits

Swedish freshwater perch have been seen to thrive in water contaminated by anti-anxiety medications. Researchers think most studies, which look solely at the negative aspects of pharmaceutical pollution, could be missing some perks for perch.

Monitoring the movements of sea trout

The sea trout populations of central Norway have declined by as much as 60 percent. Researchers are trying to find the causes.

Wild salmon can adapt to climate change

Atlantic salmon are more capable of withstanding temperature changes than scientists had thought.

Traces of skin lotion found in Atlantic cod

That nice, silky smooth feeling you get when you rub yourself with your favourite lotion, comes from maybe not so nice chemicals.

The fish feed of the future grows in the woods

Yeast produced using chips from Norwegian spruce trees and bacterial meal grown on natural gas from the North Sea become high quality proteins for farmed fish.