Some pet tropical fish are naturally placid, while others are fearsome predators. From garden ponds filled with Koi Carp to the humble goldfish bowl (although goldfish are far happier living in a ...

Add Yahoo as a preferred source to see more of our stories on Google. Years ago, while on vacation in Belize, I spent some time fishing off a pier with spinning gear I’d brought from home. I had great ...

Most anemonefishes are striped and the direction of their stripes — vertical or horizontal — correlate with their levels of territorial aggression A new study reveals that anemonefishes display ...

It’s important to know which tropical fish can happily share a tank - and which should be kept separately. Whether its lovingly-kept garden ponds filled with Koi Carp to the humble goldfish bowl ...

There is a long-standing tension between aquarium hobbyists and marine biologists over how to interpret fish behavior.

Is it a fish? Is it a snake? No, it's a snakehead fish. For only the fourth time in the state of Missouri, an angler caught a northern snakehead fish that is not native to the U.S. Fisheries ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. An aggressive frog-eating fish that breathes air has been found in new ...

A new study showed that psilocybin – the chemical compound in magic mushrooms that influences behavior and emotions – dissolved in water could make fish less aggressive and lazier. Researchers found ...

Even the most naturally aggressive fish can find a sense of calm when exposed to the compounds found in magic mushrooms. Researchers from Acadia University and The University of British Columbia ...