Fish

Last year, it was discovered the bluestreak cleaner wrasse could pass the "mirror test", showing that it can recognize its own face in a mirror. Now researchers have found it can actually size itself up against a potential competitor before a fight.

You might soon be buying anti-aging skincare products containing fish guts, thanks to a new study that found that the innards of two species of seabream possess compounds that fight wrinkles and age spots.

The law of unintended consequences gained new appreciation today when a five-year study was published in the Journal of Animal Ecology detailing how long-term exposure to pharmaceutical pollutants can have dramatic consequences for marine wildlife.

While you're more likely to win the lottery than become a tasty snack for a great white, shark attacks have long been a real fear for beachgoers. While attacks and fatalities look to be on the rise, scientists are yet to pinpoint exactly why.

Fish oil supplements containing omega-3 have long been touted as good for heart health. A new study has found they also reduce aggression. Researchers say the safe, common supplements should be used everywhere from the playground to the prison system.

Fish farming may be getting much more eco-friendly, courtesy of soybean processing wastewater. Microbes in the liquid have been used to produce proteins that could replace the fishmeal which is currently fed to farmed fish.

If a giant prehistoric salmon isn't scary enough for you, how about one with warthog-like tusks? According to a new study, Oncorhynchus rastrosus possessed just such appendages – even though the fish likely fed on tiny plankton.

A new type of storm-resistant fish farm could make aquaculture operations more eco-friendly. The submersible structure is designed to stay in the deep waters of the open ocean, where it should have less environmental impact than shore-adjacent pens.

A tiny, newly-discovered minnow has measured louder than gunshots, jet engines or most competition-grade car stereos on the decibel scale – which raises the question: how on Earth was it not discovered earlier? It hasn't exactly been discreet.

Scientists have devised a method of using fish scales to convey encrypted messages. Not only would the technology divert seafood industry waste from landfills, it should also be less costly than existing options such as special inks.

Despite how cute 2001's Finding Nemo's clownfish was, these colorful animals have a dark side. Scientists have found that they will 'count' another clownfish's white stripes, and will viciously attack any visitor that happens to look just like them.

While stormwater runoff pollutants in general aren't great for aquatic animals, chemicals from tire particles are particularly harmful to salmon. A study now shows that permeable pavements could keep most of those toxins from ever reaching the fish.