We're starting with the fish that have temperaments that make them unlikely to get on with other species of tankmates. In ...

The "kings" of freshwater aquariums, Discus fish are known for their stunning looks. With stable warm temperatures and clear ...

Betta fish. Apart from being a low-maintenance breed, Betta fish also tend to live a long, happy life. Maintain the aquarium at 78-82 degrees Fahrenheit as this is a tropical fish.

In a river of western Brazil, an “armored” creature with bumpy lips swam through the “dark tea-colored” waters. Something ...

This goldfish isn't native to the area, but they aren't invasive, Houck said. He and Scott Robinson, who was working with him, put the fish back in the water after they took a couple of photos.

They feed the fish three times per day and take shifts watching over them, ensuring the fire hydrant remains at a slow trickle. “I feel like we’re helping the goldfish," Lovick said.

A group of Brooklyn men created a makeshift goldfish pond in a puddle pooling under a leaky hydrant, delighting some locals, and concerning others who fear the fish will not survive.. Longtime ...