The oceans contain numerous hidden treasures, yet few are as rare, fragile, and valuable as the Totoaba fish. Often called “marine cocaine” because of its exceptionally high market price, this ...

Swim bladder disease is a very common health condition that affects many types of fish. In short, it makes it difficult for the fish to maintain buoyancy because of a compromised swim bladder. They ...

Hovering fish aren’t loafing—they burn twice resting energy to make micro-fin tweaks that counteract a natural tendency to tip, and body shape dictates just how costly the pause is. The discovery ...