Thousands of endemic grunion fish leapt onto Bay Area shores late Tuesday night for a seasonal mating ritual, a reminder that ...

Casting along a drop-off on the St. Croix River, I felt some sharp tugs. I thought this might be rocks or clams. But then the ...

Flushing your pet tropical fish to set it free is a bad idea. So is releasing it at the beach. Intentional and unintentional aquarium releases have been a leading cause of freshwater fish invasions, ...

A hardy aquarium fish prized for its golden hue, the ornamental Flowerhorn cichlid (Amphilophus spp.) has become a problem for the residents of San Pablo City, Laguna: It is increasingly taking on an ...

About 170 Southern mountain yellow-legged frogs, a critically endangered amphibian native to Southern California’s mountainous regions, were recently let loose in their wild habitat, officials ...