Changes in both metabolism and swimming abilities appear to help these fish live in some of the hottest waters on the planet, according to a study published July 1 in the journal Nature ...

These protected areas bring an incredible amount of biodiversity right into the bustling metropolis–including coral reefs.

REEF FISH IN PERIL ... It’s time to rein in the aquarium trade through tighter monitoring and regulation, so we don’t lose any of these swimming gems. SAVING THE BANGGAI CARDINALFISH . Banggai ...

Modern reef fish feed in a variety of ways. Many suck floating food into their mouths by rapidly expanding their heads. This suction feeding is thought to be ancestral in teleosts. A smaller number ...

Scientists thought fish saved energy by swimming in flat diamond shapes, but study shows they actually prefer swimming in 3D ...

Why some fish are really bad at swimming. Seahorses, frogfish, and others live the life aquatic with little swimming. Not everyone can swim like a fish—even among fish.

An Australian ocean photographer has captured a one-in-a-million example of the cruelty of life in the deep – a fish peering out into the ocean, helpless, from inside a jellyfish. Tim Samuel, a ...

Some fish repeated such strange actions many as 400 times per day. After the wrasses were injected with dye on their throats and returned to a mirrorless tank, they went about their lives as if ...