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

Mesmerizing, kaleidoscopic, and fabulously exotic, the huge variety of types of saltwater fish to pick for your aquarium will ...

The best types of fish for first-time owners are fuss-free, easy to maintain, and hardy. But just because they might be a dream to look after, it doesn’t mean they’re dull.

A new species of fish, Lacustricola gemma, or the gem lampeye fish, was discovered in a shrinking pond in the Democratic ...

In a river of western Brazil, an “armored” creature with bumpy lips swam through the “dark tea-colored” waters. Something about it caught the attention of nearby scientists — and for good reason. It ...

Fish communicate using sound, but conservation laws often ignore their voices, acoustic habitats, and behaviors.

Pet owners often wonder why their fish is aggressive. Find out why it’s occurring, if there is anything you should do about it, and when to call a vet.