these fish are considered symbols of good luck in some cultures. Arowanas require large tanks and a protein-rich diet. Their predatory nature and graceful swimming make them a fascinating species ...

An curved arrow pointing right. Fish maw — the swim bladder of a fish — is one of the most expensive dried-seafood products in the world. A Chinese delicacy, it can fetch $450 to $1,000 per ...

In research published in Advanced Science, investigators developed an injectable hydrogel containing components of fish swim bladders and used it to repair damaged heart tissue. The fish swim ...

At the end of the 160-foot swim, the first diver rewarded the fish with food, while the other didn’t. This portion of the experiment lasted 10 days, for a total of 5 dives. On the first day of ...