The doorbell, or "visdeurbel" in Dutch, sends a signal to operators to lift the lock and let the fish pass through. Usually, ...

The research maps biofluorescence across 459 glowing fish species and shows just how varied the colors have become.

U trecht's famous fish doorbell, which first began operating in 2021, is returning for another year. Soon, people of the ...

Plastic pollution in freshwater is increasing, leading to micro- and nanoplastic buildup. A study found these particles and their surface charge can harm fish reproduction, especially under stress.

Brian Moorhead, an environmental scientist with SRP, said it’s cheaper and easier to use fish than humans when it comes to removing those plants.

Another conservation group has filed a lawsuit challenging the federal government’s delay in determining critical habitat for ...

Nighttime drops in ocean oxygen raise energy use in small reef fish. Repeated stress could affect reef health as oceans warm.

Freshwater ecosystems are rich but fragile. Of the new fish species discovered, many are critically endangered ...

Scientists in China have identified 15-million-year-old freshwater fish fossils from the Qinghai-Tibet Plateau, revealing a warmer climate.

The Northern Snakehead, an invasive fish species from Asia, has been spotted in Missouri and poses a threat to the local ecosystem due to its large size, aggressive appetite, and lack of predators.

Researchers identified a new freshwater fish species in South Africa after years of genetic testing and analysis.

Discover some of the best fish breeds for kids to care for, including guppies, Mickey Mouse platies, neon tetras and zebra danios. These beginner-friendly aquarium fish are hardy, colourful and easy ...