A "two-faced" fossil found about four decades ago in Siberia and dating back 415 million years is just revealing its secrets, showing that humans and other jawed vertebrates actually evolved from cartilaginous fishes, according to new research.
Fish apparently use a "sixth sense" to detect water flows, solving a long-standing mystery of how these aquatic creatures respond to their environment, according to a new study.
One lucky rockfish was recently given a pretty intense makeover, where experts implanted a new glass eye to help stop some aquarium-side bullying.
A type of rainbow trout, called steelheads, are dying off in droves as they make their way from Lake Ontario to the Salmon River in Oswego County, and the New York state Department of Environmental Conservation (DEC) says it all has to do an inexplicable vitamin B deficiency.
Water pollution is not exactly an underappreciated concern. For years state and federal officials have been working with experts to improve water quality, limit pollution, and test for potential consequences. However, it should go without saying that things can be overlooked. That appears to be the case concerning pollution from a common diabetic drug, which may now be poisoning fish in Lake Michigan.
Fossilized rod and cone cells - the kind that allow for vision - were recently discovered in an ancient fish specimen, suggesting that it and others like it saw the world in color for at least 300 million years, according to a new study.
Even in the wake of climate change some species are doing fine, learning to adapt to changing ecosystems by following their favorite foods. A new field study has revealed a very distinct example of this in southeast Alaska’s common char.
A study of the massive and beautiful Californian sheephead fish has revealed some startling consequences of fishing, where removing the largest of these creatures from the kelp forests they call home can actually harm the region itself, with the kelp suffering from a decline seemingly born of grief for their captured friends.
Tags that help researchers track the survival of fish may actually be making these animals more vulnerable to marine predators with hypersensitive hearing, such as seals. That would then make these tags little more than tiny "dinner bells," and could seriously skew survival data.
In an examination of physical diversity among eel species, researchers have found that biters are far more varied than eels that use suction to snatch up food. Now it has been suggested that this is an example of how certain feeding habits can limit how a species physically changes over time.
A new United Nations report recently revealed that the world is doing well to protect valuable environments, with 3.4 percent of the world's oceans currently protected by legislation. However, enforcing protection laws remains a problem for world nations, especially when it comes to protecting fisheries. Now a team of researchers is claiming that they have a few ways to improve things.
An analysis of nearly 150 years of data has revealed that seagulls are eating far more trash than they used to, leading to low fertility and population declines. Now, researchers are suggesting that this may have occurred because fish stocks are not as nearly as plentiful as they once were.
Researchers have determined that many fish, like the relatively tiny zebrafish, are actually very good at focusing on multiple objects simultaneously, understanding what they are seeing and interacting with these objects in displays that contradict the popular impression of a "three-second memory."
Thousands of dead fish are mysteriously floating in the polluted Rio bay, a smelly snag considering the famous city will be host to the 2016 Olympics, including sailing events that will take place in the bay.
Experts have long known that human activity can influence how local animals live, including their habitats, food sources, and even behavior. However, a new study has found that we can even impact how an animal procreates, changing the size and structure of specific fish species' genitalia in only a few decades.