Algae-cleaning fish keep aquariums clean by eating algae. They help keep the water clear and create a healthy environment for other fish. Tap to read in detail.

Got a problem with algae in your aquarium? These fish will all earn their keep by helping to keep it under control... As our tanks become increasingly smaller we need to find similarly sized nano ...

Microplastics have been steadily increasing in freshwater environments for decades ... or 1/100 of the width of a human hair, to five millimeters, which is about the size of a pencil eraser.

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Energy-making chloroplasts from algae have been inserted into hamster cells, enabling the cells to photosynthesize light, according to new research in Japan. It was previously thought that ...

Reaching up to 10 feet (3 meters) long and weighing 440 pounds (200 kilograms), arapaima are the largest freshwater fish in South America—and an important species in the Amazon River ecosystem.

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An algae bloom around the Santa Monica Pier created a unique "red tide" event on Tuesday. (Photo by Thomas Leffler) For those who saw the colors of the ocean change to red off the Santa Monica Pie ...