The usual length of an adult piranha is between 15 to 50 centimeters or 6 to 20 inches. One of the most prevalent species, the red-bellied Piranha, often reaches 10 inches in length (25 centimeters).

Giant trevally fish in aquarium water. Image via Depositphotos The Giant Trevally, sometimes called the GT, is an apex predator throughout the Indo-Pacific that employs sophisticated group hunting ...

Mesmerizing, kaleidoscopic, and fabulously exotic, the huge variety of types of saltwater fish to pick for your aquarium will give you a visual taste of the underwater ocean world.

A trade-off between tooth size and jaw mobility has restricted fish evolution, Nick Peoples at the University of California Davis, US, and colleagues report in the open-access journal PLOS Biology .

Every year, wild and farmed fish are killed in great numbers to feed humanity. A new study discovers that some of the fish suffer between two to twenty minutes of intense pain, once they are ...

Koi fish, especially the Kohaku variety, are prized for their beauty, longevity, and breeding potential. Factors like bloodline, pattern, size, and gender influence their value, with females often ...

University of Otago—Ōtākou Whakaihu Waka scientists have discovered that it takes mere minutes for a species of sex-changing fish to develop dominant behavior after a change in the pecking order.

State health officials have issued a host of new warnings in their Eat Safe Fish Guides, manuals that help Michigan residents eat fish that contain fewer pollutants. After reviewing the latest ...

Over the last year, dozens of baby American paddlefish have been cared for by staff at SEA LIFE Aquarium in Kansas City, Missouri, as part of an effort between local, state and federal agencies to ...

The Michigan Department of Health and Human Services has released a guide on what fish are safe to eat, if you should limit servings and what fish to keep off your plate.