Caption: An octopus cyanea hunting with a blacktip grouper on one side and a gold-saddle goatfish (‘blue goatfish’) on the other. An octopus patrols a shallow reef, searching for food–and it’s not ...

Freshwater trout migrations typically span just a few hundred yards and tens of miles. They’re not covering the distance that their anadromous relatives do, but they, too, will seek out new water for ...

Climate change is reshaping fish habitats. Some fish are winners, others are losing out. Subscribe to our newsletter for the latest sci-tech news updates. Fish already face plenty of pressure from ...

GLENDALE, Wis. - A fish passage built along the Milwaukee River in Glendale's Kletzsch Park is now open to help native fish move upstream. It's a boon for fishermen – and for fish, especially for ...

An extensive international study led by researchers from Tel Aviv University found a decline in the abundance of marine fish species that move rapidly toward the poles to escape rising sea ...

When we say that someone is a “fish out of water,” we sometimes mean to suggest that they are uncomfortable or out of their ...

Mudskippers break the rules of fish biology by breathing through their skin, walking on their fins and thriving on land where water disappears twice a day.