Fish

Fish have a sensory system known as the lateral line, which allows them to detect movements and pressure gradients in the water. Scientists have now given a robotic fish its own version of that system, letting it determine the best swimming speed.

It's important for fish farmers to keep track of the number of fish in their pens, but doing so involves going in and actually netting out some of the fish. According to new research, echo-sounding tech could soon serve as an easier alternative.

Marine aquaculture pens have to be regularly checked for holes, plus the fish need to be inspected for parasites. And although the job is typically performed by human divers, it turns out that a robotic sea turtle may be a better choice for the task.

The annual Ocean Art Underwater Photo competition, now in its eighth year, is a chance to get up close and personal with our marine cousins so many times removed. Here are all this year's winners and runners up in a spectacular photo gallery.

Scientists have developed a clingfish-inspired suction cup, that outperforms the actual fish itself.

American scientists have created a "Tunabot," that they claim can match the swimming speed of an actual tuna.

Scientists have copied the porcupinefish's spines to create a water-repellent material that's more robust than previous efforts.

Inspired by remora fish, researchers at NJIT have designed a new suction cup that’s far more adhesive than the real thing.

If you went anywhere near a rec room or a gift shop in the early 2000s, you probably remember Big Mouth Billy Bass, that motion-sensing, singing, rubber fish. Now, to reel in those customers that got away, there’s a new version of the iconic gag gift that baits the hook with Alexa integration.

​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.

​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.

​​Robots disguised as animals have come to provide us with unprecedented insights into the natural world. Now scientists have developed a robotic fish that can swim just like a real one, allowing them to get up close and personal as a way of studying marine life. ​