The ricefield eel (Monopterus albus) is the only protogynous hermaphrodite freshwater fish. How this species changes its sex ...

Tilapia often gets a bad rap, but some of that is unfounded. There are plenty of reasons why this mild, white fish is ...

They glide through the water with the serenity of age. Some were born before World War I, others during the Great Depression.

If your aquarium feels a little blah, maybe it’s missing some bold personalities. We’re talking fins that flash like neon signs and colors that could outshine a fashion runway.

The Southeastern Michigan Aquarium Society held an auction Saturday, where hobbyists spent hours bidding on colorful fish to ...

Some aquarium buddies are much more interactive than you'd expect—they follow their owners around, beg for food, and even ...

USFWS Pacific Southwest Region / Flickr THE FIRST FISH were completely marine, originating in the ocean. When coastlines got ...

Water type: Archerfish are brackish water fish, meaning they need water that is a mix of freshwater and saltwater. 2. Tank size: They require a large tank, to thrive. 3. Water parameters ...

If you fly fish in saltwater, you are aware of what the words “nervous water” mean. If you only fly fish in freshwater, you ...

Roach fish that migrate between different lakes and water courses have larger pupils and better eyesight than roach fish that stay in one place. The adaptation makes it easier for the red-eyed ...