Learn how cleaner wrasse used a mirror and even dropped food to test their reflections, a behavior linked mostly to mammals.

Nighttime drops in ocean oxygen raise energy use in small reef fish. Repeated stress could affect reef health as oceans warm.

When it comes to seafood, larger fish, like tuna, salmon, cod, mahi mahi, trout, and swordfish, usually get all the attention. They’re more likely to be found on restaurant menus, in sushi rolls, and ...

A small coral reef fish can recognize itself in a mirror. This discovery challenges long-held ideas about animal intelligence ...

Women who eat small fish whole -- from the head to the bones -- may face a lower risk of dying from cancer and other causes, a new study out of Japan finds. Capelin fish is pictured here. Getty Images ...

A new study from NYU Abu Dhabi has found that small coral reef fish in the Arabian Gulf are facing a hidden but growing source of stress. When oxygen levels drop at night, a common occurrence on some ...

Groundbreaking research from Nagoya University Graduate School of Medicine has revealed a surprising yet significant health benefit, consuming small fish whole can significantly reduce cancer ...

The relationship between diet and cancer risk continues to be a crucial area of research as scientists uncover more connections between what we eat and our long-term health outcomes. A groundbreaking ...

A new study has found evidence linking the intake of small fish, eaten whole, with a reduced risk of all-cause and cancer mortality in Japanese women. Conducted by Dr. Chinatsu Kasahara, Associate ...

Apartments can now host vibrant underwater worlds. Small tanks offer a calming escape for city dwellers. Betta fish, guppies, ...

Species numbers alone do not fully capture how ecosystems are changing. In a global study, scientists analyzed long-term data ...