When oxygen disappears, most fish suffocate. This one ferments its own metabolism and waits months for spring beneath frozen ...

The rockhead poacher is a little fish with a big pit in its head. The divot may be like a drum, making sound that rises above ...

A clever tropical fish has flipped how biologists are thinking about memory, brains and visual recognition in the animal ...

A cavity in the middle of the rockhead poacher’s skull might be used like a maraca to produce sound, new research suggests.

Vitamin D is a fat-soluble vitamin critical for bone growth and cell development. Rainbow trout, salmon, sardines, tuna, mackerel, and herring are good sources.

Eggs contain some vitamin D, but fatty fish provide much higher amounts, making them one of the best dietary sources you can ...