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Fish

Environment

Wastewater treatment process may keep fish off antidepressants

While some people may wonder about the possible side-effects of antidepressants on the people who are taking them, here’s another thing to consider ... what happens when the residue from those drugs passes through the user’s urine and into the sewage system? As it turns out, it can enter local waterways and affect the fish. Now, researchers from KTH Royal Institute of Technology in Stockholm have developed technology to keep that from happening. Read More

Science

Study of remoras may lead to new adhesives

If you’ve seen even a few minutes of any documentary on sharks, then chances are you’ve seen a remora. They’re the smaller fish that hitch rides on sharks by sucking onto them. Not only are the remoras able to achieve a seal against their hosts’ rough, sandpaper-like skin, but they also don’t appear to harm that skin in the process. Researchers from the Georgia Tech Research Institute are now studying how the remoras manage this, in hopes of applying their findings to the development of next-generation adhesives.Read More

Science

ECO-Cycle kit grows greens and cleans aquarium water

The folks at the non-profit ECOLIFE Foundation are dedicated to providing, as they put it, “ecologically sustainable water, food, and shelter to communities through education applied programs.” Part of this mandate involves the promotion of community aquaponics projects – systems that symbiotically combine aquaculture and hydroponics. Now, the group is bringing scaled-down aquaponics to classrooms and homes, in the form of its ECO-Cycle Aquaponics Kit for aquariums. Read More

Science

Blind cave fish inspires sensing system for autonomous underwater vehicles

Ever wonder how fish can find their way around so easily in murky water? Well, most of them use something called their lateral line – a row of hair cells down either side of their body that detect changes in water pressure caused by movement, or by water flowing around objects. Now, scientists from Singapore’s Nanyang Technological University and MIT have copied the lateral lines of the blind cave fish, in a man-made system designed to allow autonomous underwater vehicles (AUVs) to navigate more accurately and efficiently.Read More

Environment

Home Aquaponics Kit: helping kids grow herbs from fish poo

Many of us have completely lost sight of where the food we eat comes from. As long as the product is sitting on the shelf when we visit the supermarket, we pay little attention to the process that led to it being there. The Home Aquaponics Kit is designed to counter this ignorance by educating children in the process involved in growing and cultivating food using a self-cleaning fish tank and a self-maintaining herb garden.Read More

Science

Wave Glider ocean robots to track sharks in northern California

If you’ve ever sat in a beach-side coffee house wondered if there was a white shark in the vicinity, then wonder no more because now there’s an app for that. A team of Stanford University researchers lead by Prof. Barbara Block is deploying a fleet of static buoys and Wave Glider robots to turn the waters off the coast of San Francisco into a huge Wi-Fi network to track tagged fish and animals. This will allow scientists to better understand sea life movements, but the project also includes offering a free app to the public that will allow them to track northern California white sharks on their tablets and smartphones.Read More

Robotics

Robotic ray could end up flapping through an ocean near you

Sometime in the future, perhaps sometime soon, the robotic jellyfish, octopi and fish cruising the world’s oceans may have to make way for one other companion – the robotic ray. A team led by University of Virginia engineering professor Hilary Bart-Smith has created such a “creature,” in hopes that its autonomously-operated descendants may someday help us humans explore and study the sea, or possibly perform surveillance for the military.Read More

Robotics

Robot becomes a leader among fish

A couple of years ago, a team of scientists from the University of Leeds succeeded in getting live stickleback fish to follow a computer-controlled “Robofish” as it was moved through their aquarium. Part of the reason for the experiment was to learn about fish behavior, in hopes that human interference in their migration routes could be minimized. While the Robofish was simply a plaster model, researchers from the Polytechnic Institute of New York University recently conducted a similar experiment, but using an actual tail-flapping robotic fish. Their discoveries could help save wild fish populations in the event of environmental disasters.Read More

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