Video shows electric eels hunting in groups
Zoologist Douglas Bastos from the National Institute of Amazonian Research in Manaus, Brazil, and his team have captured video footage of Volta’s electric eels hunting in groups of more than 100.
Zoologist Douglas Bastos from the National Institute of Amazonian Research in Manaus, Brazil, and his team have captured video footage of Volta’s electric eels hunting in groups of more than 100.
Coral reef fish start their lives as small, transparent larvae. After they hatch, they join a swirling sea of plankton and frequently get dispersed to different reefs due to ocean currents, waves and the wind.
In this study, the scientists did seven years of surveys focussing on the Clark’s anemonefish, measuring how the dispersal of larvae varied over the years and seasonally. They discovered that the larvae dispersal varied immensely on both these timescales.
In 2016, the National Oceanic and Atmospheric Administration (NOAA) undertook a closer examination of the wrecks of the German U-boat U-576 and the Nicaraguan freighter SS Bluefields, using glass-domed submersibles. The two historically significant and deep (200m) shipwrecks sank near one another on the continental shelf of North Carolina, USA, during World War II.
During a seven-year study of reef sharks in Tahiti, ethologist Ila France Porcher also observed the behaviours of various fish species. Here, she offers a detailed description and insights into the dynamic and mesmerising spawning events of the striated surgeonfish, which take place every year in the South Pacific.
—Diving in the French river Rhône with European catfish
The Rhône is a large French river, which is 545km long. It flows from the Alps, across Lake Geneva and joins the Mediterranean Sea. Cloudy in appearance, as if to preserve her secrets, it is difficult to have strong views about this type of river
According to a new study published in the Elementa: Science of the Anthropocene journal, the processing of Alaskan pollock into fish sticks, imitation crab, and fish fillets generates nearly twice the emissions produced by fishing itself.
Scientists at Pennsylvania State University and the University of California, Santa Barbara have discovered that when fishermen selectively catch large and medium-sized parrotfish at coral reefs facing decline due to climate change, algae has a better chance of growing and overtaking the corals.
Nonetheless, according to the research, the reef’s biomass is maintained. This is because even with less of the large and medium-sized parrotfish, there would be many smaller parrotfish that would take their place.
A recent study by France’s National Centre for Scientific Research (CNRS), Woods Hole Oceanographic Institution (WHOI) and colleagues indicates that the anemonefish does not have the genetic ability to adapt swiftly enough to climate change.
The findings of the study were published in the November 27 issue of the Ecology Letters journal.
The research was conducted in the lagoons of Kimbe Bay, covering more than a decade. This area is a biodiversity hotspot in Papua New Guinea.
According to a new study, climate change is giving rise to changes in the diets of fishes in Ontario lakes, thereby altering the food webs there.
Researchers from the University of Guelph have discovered that the fish in Ontario lakes have been forced to forage in deeper waters due to the warmer average temperatures in the past decade. As a result, they consume prey species that are different from their normal diet, and this has led to a change in the flow of energy and nutrients in the lake.
Australia, the great brown land down under, is home to many iconic and often strange-looking creatures, both above and below the water. But few are as unique and visually spectacular as the leafy seadragon!