Betta fish are known for their stunning colors, elegant fins, and yes, their attitude. These feisty little swimmers are often ...

Tetras are one of the most popular and diverse types of freshwater aquarium fish. With more than 150 unique types of tetra ...

When the top spotty fish in a tank disappears, the runner-up turns aggressive within minutes, rushing and nipping rivals ...

Loaches include a wide variety of fish, but are typically small and found in freshwater systems. They are typically nocturnal ...

Near a river in the Democratic Republic of the Congo sat a temporary pond, doomed to dry up eventually. Inside swam a “rainbow” creature with “large” yellow eyes. Something about it caught the ...

Long before the first dinosaur hatched, Earth's ancient life was already thriving. There were bizarre sea creatures and lumbering plant-eaters that ruled prehistoric landscapes for hundreds of ...

Commercial trawlers off the southern coast of India caught several unfamiliar-looking eels in January 2024 and gave the ...

Researchers said they named the new species after the Nansei Islands near the Okinawa Trough where it was first discovered ...

Xiphophorus comes from the Greek words for “sword” and “to carry.” Fish in this genus either have long, elongated tail fins that resemble swords or regular, rounded tail fins.

Thresher sharks are back off the Seacoast—sleek, strange, and swinging nine-foot tails.

And the males in their spring spawning colors with vibrant neon green fins and that large black dot just in front of the tail fin make the bowfin in all ways superior looking to such ignoble Fish ...