Brown algae is a common problem in many fish tanks, especially those that have been recently set up. It’s not dangerous to fish but can turn your beautiful aquarium into an ugly mess. This slimy layer ...

Algae are inevitable when you own a fish tank. With proper planning and preparation, you can ensure algae in a fish tank are kept under control, so this plant doesn’t become an issue for your fish. If ...

Didymosphenia geminata — didymo for short — also has another, much less scientific, nickname: rock snot. It seems to be spreading in Michigan waterways.

Warnings will soon be posted in the Delaware Water Gap National Recreation Area advising boaters and fishermen of a new invasive species of algae called Didymo, more commonly known as "rock snot" ...

As the sun sets, Jim Dunnigan, Libby Dam mitigation coordinator for Montana Fish, Wildlife and Parks, tosses a mesh bin into the Kootenai River in preparation for a night of electrofishing surveys.

COCOA BEACH — Just when you thought that the Indian River Lagoon might be getting a little better, it's back: the brown algae that kills fish by the thousands is blooming, foreshadowing more doom for ...