Even though tilapia may be raised on farms, the food that they eat still contains ecologically-important fish that are caught in the ocean, depleting wild stocks. That's why Dartmouth College scientists are now looking at replacing the fishmeal in that food with existing algae meal.
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Paleontologists have long wondered about the skeletons of a strange, ancient fish family called heterostracan. But now UK scientists say they’ve cracked it, declaring the 400 million-year-old fossils to be the oldest examples of bone ever found.
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We hear a lot about the toll that large-scale fishing operations are taking on wild fish populations, but when you add them all together, small-scale fisheries can have quite an effect, too. A new fish-body-shape analysis system could help keep them in check.
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A couple of years ago we heard about a study conducted at Britain's University of Exeter, which indicated that increasingly acidic oceans were harming fishes' sense of smell. New research now reinforces that finding, and it could mean that trouble is in store for the marine ecosystem.
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Anglerfish are famous for their head-mounted bulbs that light up the inky blackness of the deepest oceans, but to find out exactly how, Cornell researchers have now sequenced the genome of the bacteria that live inside those lightbulbs, and found a strange story of symbiosis still in progress.
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According to an international understanding, all offshore oil rigs, wind turbines and other structures must be removed from the environment once they're no longer functional. A new study, however, claims that it might be better for marine life if such decommissioned installations just stayed put.
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One of the world's most commonly farmed fish, tilapia are typically raised in square pens and get fed by hand a few times a day. New Brazilian technology that does away with those factors, however, is claimed to reduce both expenses AND fish mortality rates.
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It was just back in March that German electrical automation company Festo unveiled two of its latest robots inspired by animals – a crawling/rolling spider and a flying fox bat. Now, it's taken the wraps off BionicFinWave, which moves like a cuttlefish.
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There's a challenge in bringing deep-sea fish up to the surface. Unless divers poke a hole in the animal's swim bladder, that organ could rupture due to the gas within it expanding as the water pressure lowers upon ascent. A new device, however, is designed to make such poking unnecessary.
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This year’s ESF list of the top new species discovered over the past 12 months features a bizarre beetle that lives undercover among ants, a fish living deeper in the ocean than ever thought possible, and a previously undiscovered single-celled organism found in an aquarium in California.
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