The bright, metallic sheen of fish skin — source of endless fascination for fishermen and aquarium owners — is due to a sophisticated system of crystals that enhance light reflection and may help fish hide from predators in the wild, scientists in Israel are reporting.

Scientists studying ancient fish bones in Scandinavia have discovered that warm-water species like anchovies and black sea bream that once thrived in Danish waters during a prehistoric warm period are now returning.

Aggressive territorial male Mozambique tilapia fish (Oreochromis mossambicus) send chemical messages to rival males via their urine. They increase urination, have smellier urine and store more in their bladders than less aggressive males, according to research published in the open access journal BMC Biology.

A new and compelling argument for reducing fish harvests – the profit motive – could persuade world fishers to endure the short-term pain of lower catches for the long-term gain of higher returns for their labor, according to authors of a ground-breaking study on fisheries over-exploitation.

ValGold Resources’ (TSX.V:VAL) latest news suggests that management has hooked a big one with its newest acquisition in Guyana.

The rearing of steelhead trout in hatcheries causes a dramatic and unexpectedly fast drop in their ability to reproduce in the wild, a new Oregon State University study shows, and raises serious questions about the wisdom of historic hatchery practices.

Recreational fishing that involves catch-and-release may seem like just good fun, and that released fish go on to live happily ever after, but a recent study at the University of Illinois shows that improper handling techniques by anglers can increase the likelihood of released fish being caught by predators.

Spring-run Chinook salmon and other fish in the rivers of California’s Central Valley could be harmed by more water-storage dams, according to researchers at Duke University and the National Oceanic and Atmospheric Administration.

A ghostly, mutant ratfish caught off Whidbey Island in Washington state is the only completely albino fish ever seen by both the curator of the University of Washington's 7.2 million-specimen fish collection and a fish and wildlife biologist with more than 20 years of sampling fish in Puget Sound.

Good news for lovers of fish and chips, Japanese scientists have come up with the perfect recipe to make a crispy batter which is also lower in fat, reports Joanna Harries in Chemistry & Industry, the magazine of the SCI.

If you want to catch a trophy northern pike, walleye or brook trout in the northern Canadian wilderness, better plan your trip soon. That’s because according to a report released today by the Wildlife Conservation Society, looming development, including forestry, mining and dam construction, threatens this pristine region of untouched forests, wetlands, lakes and streams.

A joint Canadian-American research team have, for the first time, demonstrated that mercury concentrations in fish respond directly to changes in atmospheric deposition of the chemical.