MarineBio Conservation SocietyFisheries News   :: ScienceDaily

Piranha-like specimen, 150 million years old, is earliest known flesh-eating fish

Thu, 18 Oct 2018 14:11:29 EDT ~ Researchers have described a remarkable new species of fish that lived in the sea about 150 million years ago in the time of the dinosaurs. The new species of bony fish had teeth like a piranha, which the researchers suggest they used as piranhas do: to bite off chunks of flesh from other fish. Find out more...

Satellite tech to create more effective, 'true' shark sanctuaries

Tue, 16 Oct 2018 13:19:38 EDT ~ When they first set out to follow grey reef sharks around the Republic of the Marshall Islands (RMI), researchers intended to survey their movement in the protected waters there. What they found was a disturbing development for the Pacific island nation. Find out more...

Extensive trade in fish between Egypt and Canaan 3,500 years ago

Mon, 15 Oct 2018 10:04:51 EDT ~ Some 3,500 years ago, a brisk trade in fish on the shores of the southeastern Mediterranean Sea had already begun. This conclusion follows from the analysis of 100 fish teeth that were found at various archeological sites in what is now Israel. Find out more...

Shrimp talent quest finds a winner

Thu, 11 Oct 2018 10:36:49 EDT ~ Shrimp help keep fish clean -- and scientists have identified the 'cleaner shrimp' with the most talent for reducing parasites and chemical use in farmed fish. Find out more...

A pheromone-sensing gene that predates land-dwelling vertebrates

Tue, 09 Oct 2018 11:36:01 EDT ~ Scientists have discovered a gene that appears to play a vital role in pheromone sensing. The gene is conserved across fish and mammals and over 400 million years of vertebrate evolution, indicating that the pheromone sensing system is much more ancient than previously believed. Find out more...

High-res data offer most detailed look yet at trawl fishing footprint around the world

Mon, 08 Oct 2018 18:34:13 EDT ~ A new analysis that uses high-resolution data for 24 ocean regions in Africa, Europe, North and South America and Australasia shows that 14 percent of the overall seafloor shallower than 1,000 meters (3,280 feet) is trawled. The analysis shows that the footprint of bottom-trawl fishing on continental shelves and slopes across the world's oceans often has been substantially overestimated. Find out more...

Land-locked Atlantic salmon also use magnetic field to navigate

Mon, 08 Oct 2018 18:33:52 EDT ~ A new study shows that Atlantic salmon use the Earth's magnetic field as a navigational tool -- much like their cousins, Pacific salmon -- and don't lose that ability through several generations of fish even after they have been transplanted into a land-locked lake. Find out more...

Small-brained female guppies aren't drawn to attractive males

Mon, 08 Oct 2018 11:44:59 EDT ~ Female guppies with smaller brains can distinguish attractive males, but they don't recognize them as being more appealing or choose to mate with them, according to a new study. The study adds weight to the link between mate preference and cognitive ability. Find out more...

Decline in native fish species: Invasive species on the increase

Mon, 01 Oct 2018 11:43:03 EDT ~ The majority of Bavaria's watercourses are in poor ecological condition. A team has now conducted the first systematic analysis of long-term data on fish stocks in the Upper Danube, Elbe and Main rivers. The team concluded that native fish species are on the verge of extinction, while the populations of some invasive species are increasing. Find out more...

Steelhead life cycle linked to environment, pink salmon abundance

Fri, 28 Sep 2018 13:13:04 EDT ~ A new study has found that steelhead trout have a remarkable life-cycle variation that responds to changes in temperature and numbers of other species of salmon. Find out more...